Thanks for the suggestions. A Speccy snapshot is available for viewing here:
http://speccy.piriform.com/results/O7aNIGGJvIgDRdKUbDvJitx
I've pasted the results from MiniToolBox below. Snaffle - prior to experiencing this issue, I regularly downloaded media using iTunes. There are still several Apple products installed on the machine, so I'll look into your suggestion and see if their removal solves the problem.
MiniToolBox by Farbar Version: 23-07-2012
Ran by [REDACTED] (administrator) on 14-08-2012 at 10:36:54
Microsoft Windows XP Home Edition Service Pack 3 (X86)
Boot Mode: Normal
***************************************************************************
========================= Flush DNS: ===================================
Windows IP Configuration
Successfully flushed the DNS Resolver Cache.
========================= IE Proxy Settings: ==============================
Proxy is not enabled.
No Proxy Server is set.
"Reset IE Proxy Settings": IE Proxy Settings were reset.
========================= FF Proxy Settings: ==============================
"network.proxy.type", 0
"Reset FF Proxy Settings": Firefox Proxy settings were reset.
========================= Hosts content: =================================
127.0.0.1 localhost
========================= IP Configuration: ================================
1394 Net Adapter = 1394 Connection (Connected)
Intel® PRO/100 VE Network Connection = Local Area Connection (Connected)
# ----------------------------------
# Interface IP Configuration
# ----------------------------------
pushd interface ip
# Interface IP Configuration for "Local Area Connection"
set address name="Local Area Connection" source=dhcp
set dns name="Local Area Connection" source=dhcp register=PRIMARY
set wins name="Local Area Connection" source=dhcp
popd
# End of interface IP configuration
Windows IP Configuration
Host Name . . . . . . . . . . . . : DESKTOP
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel® PRO/100 VE Network Connection
Physical Address. . . . . . . . . : 00-12-3F-C5-27-5E
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : 14 August 2012 09:58:42
Lease Expires . . . . . . . . . . : 17 August 2012 09:58:42
Server: UnKnown
Address: 192.168.0.1
Name: google.com
Addresses: 74.125.230.129, 74.125.230.137, 74.125.230.142, 74.125.230.132
74.125.230.135, 74.125.230.134, 74.125.230.136, 74.125.230.130, 74.125.230.133
74.125.230.128, 74.125.230.131
Pinging google.com [173.194.34.166] with 32 bytes of data:
Reply from 173.194.34.166: bytes=32 time=40ms TTL=54
Reply from 173.194.34.166: bytes=32 time=41ms TTL=54
Ping statistics for 173.194.34.166:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 40ms, Maximum = 41ms, Average = 40ms
Server: UnKnown
Address: 192.168.0.1
Name: yahoo.com
Addresses: 72.30.38.140, 98.138.253.109, 98.139.183.24
Pinging yahoo.com [98.139.183.24] with 32 bytes of data:
Reply from 98.139.183.24: bytes=32 time=367ms TTL=47
Reply from 98.139.183.24: bytes=32 time=317ms TTL=47
Ping statistics for 98.139.183.24:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 317ms, Maximum = 367ms, Average = 342ms
Server: UnKnown
Address: 192.168.0.1
Name: bleepingcomputer.com
Address: 208.43.87.2
Pinging bleepingcomputer.com [208.43.87.2] with 32 bytes of data:
Reply from 208.43.87.2: Destination host unreachable.
Reply from 208.43.87.2: Destination host unreachable.
Ping statistics for 208.43.87.2:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Ping statistics for 127.0.0.1:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 12 3f c5 27 5e ...... Intel® PRO/100 VE Network Connection - Packet Scheduler Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.2 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
169.254.0.0 255.255.0.0 192.168.0.2 192.168.0.2 20
188.121.45.128 255.255.255.255 192.168.0.1 192.168.0.2 20
192.168.0.0 255.255.255.0 192.168.0.2 192.168.0.2 20
192.168.0.2 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.0.255 255.255.255.255 192.168.0.2 192.168.0.2 20
224.0.0.0 240.0.0.0 192.168.0.2 192.168.0.2 20
255.255.255.255 255.255.255.255 192.168.0.2 192.168.0.2 1
Default Gateway: 192.168.0.1
===========================================================================
Persistent Routes:
None
========================= Event log errors: ===============================
Application errors:
==================
Error: (08/08/2012 09:44:15 AM) (Source: crypt32) (User: )
Description: Failed auto update retrieval of third-party root list sequence number from: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt> with error: The specified server cannot perform the requested operation.
Error: (08/08/2012 09:44:15 AM) (Source: crypt32) (User: )
Description: Failed extract of third-party root list from auto update cab at: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.
Error: (08/08/2012 09:44:12 AM) (Source: crypt32) (User: )
Description: Failed auto update retrieval of third-party root list sequence number from: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt> with error: The specified server cannot perform the requested operation.
Error: (08/08/2012 09:44:12 AM) (Source: crypt32) (User: )
Description: Failed extract of third-party root list from auto update cab at: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.
Error: (08/08/2012 09:44:06 AM) (Source: crypt32) (User: )
Description: Failed auto update retrieval of third-party root list sequence number from: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt> with error: The specified server cannot perform the requested operation.
Error: (08/08/2012 09:44:06 AM) (Source: crypt32) (User: )
Description: Failed extract of third-party root list from auto update cab at: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.
Error: (08/08/2012 09:44:01 AM) (Source: crypt32) (User: )
Description: Failed auto update retrieval of third-party root list sequence number from: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt> with error: This operation returned because the timeout period expired.
Error: (08/08/2012 09:43:46 AM) (Source: crypt32) (User: )
Description: Failed extract of third-party root list from auto update cab at: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.
Error: (08/08/2012 09:43:46 AM) (Source: crypt32) (User: )
Description: Failed extract of third-party root list from auto update cab at: <
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.
Error: (06/13/2012 01:53:10 PM) (Source: .NET Runtime Optimization Service) (User: )
Description: .NET Runtime Optimization Service (clr_optimization_v2.0.50727_32) - Tried to start a service that wasn't the latest version of CLR Optimization service. Will shutdown
System errors:
=============
Error: (08/07/2012 05:13:47 PM) (Source: Dhcp) (User: )
Description: The IP address lease 192.168.0.2 for the Network Card with network address 00123FC5275E has been
denied by the DHCP server 192.168.0.1 (The DHCP Server sent a DHCPNACK message).
Error: (07/25/2012 05:05:48 PM) (Source: Print) (User: NT AUTHORITY)
Description: Sharing printer failed + 1722, Printer Dell Laser Printer 1100 share name Printer3.
Error: (07/20/2012 10:38:33 AM) (Source: 0) (User: )
Description: \Device\CdRom0
Error: (07/20/2012 10:38:27 AM) (Source: 0) (User: )
Description: \Device\CdRom0
Error: (07/20/2012 10:38:22 AM) (Source: 0) (User: )
Description: \Device\CdRom0
Error: (07/16/2012 07:27:51 AM) (Source: Print) (User: NT AUTHORITY)
Description: Sharing printer failed + 1722, Printer Microsoft XPS Document Writer share name Printer2.
Microsoft Office Sessions:
=========================
=========================== Installed Programs ============================
Adobe AIR (Version: 2.7.0.19530)
Adobe Flash Player 10 Plugin (Version: 10.3.181.34)
Adobe Reader X (10.1.3) (Version: 10.1.3)
Apple Application Support (Version: 2.1.6)
Apple Mobile Device Support (Version: 4.0.0.97)
Apple Software Update (Version: 2.1.3.127)
ATI Display Driver (Version: 8.263.5.1-060607a-035600C-Dell)
Bonjour (Version: 3.0.0.10)
Conexant HDA D110 MDC V.92 Modem
Dell Laser Printer 1100 Software Uninstall
EasyBCD (Version: 1.51)
GearDrvs (Version: 1.00.0000)
GnuWin32: Wget-1.11.4-1 (Version: 1.11.4-1)
Google Chrome (Version: 21.0.1180.77)
Intel® PRO Network Connections Drivers
ISO Recorder (Version: 2.0.0)
iTunes (Version: 10.5.2.11)
Java Auto Updater (Version: 2.0.6.1)
Java 6 Update 29 (Version: 6.0.290)
Malwarebytes Anti-Malware version 1.61.0.1400 (Version: 1.61.0.1400)
Microsoft .NET Framework 2.0 Service Pack 2 (Version: 2.2.30729)
Microsoft .NET Framework 3.0 Service Pack 2 (Version: 3.2.30729)
Microsoft .NET Framework 3.5 SP1
Microsoft .NET Framework 3.5 SP1 (Version: 3.5.30729)
Microsoft .NET Framework 4 Client Profile (Version: 4.0.30319)
Microsoft .NET Framework 4 Extended (Version: 4.0.30319)
Microsoft Internationalized Domain Names Mitigation APIs
Microsoft National Language Support Downlevel APIs
Microsoft Office 2007 Service Pack 3 (SP3)
Microsoft Office Excel MUI (English) 2007 (Version: 12.0.6612.1000)
Microsoft Office File Validation Add-In (Version: 14.0.5130.5003)
Microsoft Office Home and Student 2007 (Version: 12.0.6612.1000)
Microsoft Office OneNote MUI (English) 2007 (Version: 12.0.6612.1000)
Microsoft Office PowerPoint MUI (English) 2007 (Version: 12.0.6612.1000)
Microsoft Office Proof (English) 2007 (Version: 12.0.6612.1000)
Microsoft Office Proof (French) 2007 (Version: 12.0.6612.1000)
Microsoft Office Proof (Spanish) 2007 (Version: 12.0.6612.1000)
Microsoft Office Proofing (English) 2007 (Version: 12.0.4518.1014)
Microsoft Office Proofing Tools 2007 Service Pack 3 (SP3)
Microsoft Office Shared MUI (English) 2007 (Version: 12.0.6612.1000)
Microsoft Office Shared Setup Metadata MUI (English) 2007 (Version: 12.0.6612.1000)
Microsoft Office Word MUI (English) 2007 (Version: 12.0.6612.1000)
Microsoft Software Update for Web Folders (English) 12 (Version: 12.0.6612.1000)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.4148 (Version: 9.0.30729.4148)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161 (Version: 9.0.30729.6161)
Mozilla Firefox 14.0.1 (x86 en-GB) (Version: 14.0.1)
Mozilla Maintenance Service (Version: 14.0.1)
nLite 1.4.9.1 (Version: 1.4.9.1)
Norton 360 (Version: 1.0.0.184)
Norton 360 (Version: 5.2.2.3)
QuickTime (Version: 7.71.80.42)
Rapport (Version: 3.5.1201.84)
Speccy (Version: 1.17)
Spotify (Version: 0.5.2)
Spotify (Version: 0.8.3.222.g317ab79d)
Update for 2007 Microsoft Office System (KB967642)
Update for Microsoft .NET Framework 3.5 SP1 (KB963707) (Version: 1)
Update for Microsoft .NET Framework 4 Client Profile (KB2473228) (Version: 1)
Update for Windows XP (KB2345886) (Version: 1)
Update for Windows XP (KB2467659) (Version: 1)
Update for Windows XP (KB2541763) (Version: 1)
Update for Windows XP (KB2607712) (Version: 1)
Update for Windows XP (KB2616676) (Version: 1)
Update for Windows XP (KB2641690) (Version: 1)
Update for Windows XP (KB2718704) (Version: 1)
Update for Windows XP (KB951978) (Version: 1)
Update for Windows XP (KB955759) (Version: 1)
Update for Windows XP (KB967715) (Version: 1)
Update for Windows XP (KB968389) (Version: 1)
Update for Windows XP (KB971029) (Version: 1)
Update for Windows XP (KB971737) (Version: 1)
Update for Windows XP (KB973687) (Version: 1)
Update for Windows XP (KB973815) (Version: 1)
VLC media player 1.1.11 (Version: 1.1.11)
WebFldrs XP (Version: 9.50.6513)
Windows Genuine Advantage Validation Tool (KB892130)
Windows Genuine Advantage Validation Tool (KB892130) (Version: 1.7.0069.2)
Windows Internet Explorer 7 (Version: 20070813.185237)
Windows XP Service Pack 3 (Version: 20080414.031525)
WinRAR 4.01 (32-bit) (Version: 4.01.0)
Yahoo! Detect
========================= Memory info: ===================================
Percentage of memory in use: 61%
Total physical RAM: 1022.07 MB
Available physical RAM: 396.33 MB
Total Pagefile: 2459.32 MB
Available Pagefile: 2000.36 MB
Total Virtual: 2047.88 MB
Available Virtual: 1976.32 MB
========================= Partitions: =====================================
6 Drive h: () (Fixed) (Total:153.38 GB) (Free:118.38 GB) NTFS
7 Drive i: () (Removable) (Total:0.93 GB) (Free:0.87 GB) FAT32
========================= Users: ========================================
User accounts for \\DESKTOP
Administrator ASPNET Guest
HelpAssistant [REDACTED] SUPPORT_388945a0
========================= Minidump Files ==================================
H:\WINDOWS\Minidump\Mini012712-01.dmp
**** End of log ****