hello,
a few days ago i tried to update my AVG virus database, but got an error message. i tried to uninstall and then reinstall it but it didn't work. then i tried to install avast, but the installation stopped in the middle. i then install the eset nod32 antivirus, but the virus database update didn't work here as well. here are the hijackthis reports

Deckard's System Scanner v20071014.68
Run by erez eltawil on 2008-07-18 17:35:48
Computer is in Normal Mode.
--------------------------------------------------------------------------------

-- System Restore --------------------------------------------------------------

Successfully created a Deckard's System Scanner Restore Point.


-- Last 5 Restore Point(s) --
88: 2008-07-18 14:35:56 UTC - RP192 - Deckard's System Scanner Restore Point
87: 2008-07-18 14:06:53 UTC - RP191 - Removed ESET NOD32 Antivirus
86: 2008-07-18 13:54:08 UTC - RP190 - Installed ESET NOD32 Antivirus
85: 2008-07-18 13:30:47 UTC - RP189 - Removed ESET NOD32 Antivirus
84: 2008-07-18 10:24:54 UTC - RP188 - System Checkpoint


-- First Restore Point --
1: 2008-04-20 13:11:57 UTC - RP105 - System Checkpoint


Backed up registry hives.
Performed disk cleanup.

Percentage of Memory in Use: 84% (more than 75%).
Total Physical Memory: 480 MiB (512 MiB recommended).


-- HijackThis (run as erez eltawil.exe) ----------------------------------------

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 17:37:32, on 18/07/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16674)
Boot mode: Normal

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\CDBurnerXP\NMSAccessU.exe
C:\WINNT\Explorer.EXE
C:\WINNT\system32\ctfmon.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\wscntfy.exe
C:\WINNT\SOUNDMAN.EXE
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\DNA\btdna.exe
C:\Program Files\LevelOne\11g Wireless LAN\WLanUtility.exe
C:\Program Files\Netex Client\NetexTray.exe
C:\Program Files\Orelus Tirgumit\tirgumit.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Common Files\Microsoft Shared\Windows Live\WLLoginProxy.exe
C:\Documents and Settings\erez eltawil\Desktop\dss.exe
C:\PROGRA~1\TRENDM~1\HIJACK~1\erez eltawil.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.ynet.co.il/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.vmule.com/2008home.htm
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O2 - BHO: Netex - {000000A4-5858-4E36-BA5B-FDD80F3D5145} - C:\Program Files\Netex Client\netextb.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: עוזר הכניסה של Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL (file missing)
O2 - BHO: (no name) - {A3D76B96-30B9-4DCC-9B3D-D12E31280D29} - (no file)
O2 - BHO: (no name) - {C2A1C5CB-C0EF-4689-9436-F62CCA1C5383} - (no file)
O2 - BHO: Band Class - {EFAE365E-DB89-4353-A952-EB035103204F} - C:\Program Files\Netex Client\netexa.dll
O3 - Toolbar: Netex - {000000A4-5858-4E36-BA5B-FDD80F3D5145} - C:\Program Files\Netex Client\netextb.dll
O3 - Toolbar: (no name) - {81705D67-3F73-4983-859B-97D0922E5ABE} - (no file)
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL (file missing)
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\COMMON~1\INSTAL~1\UPDATE~1\isuspm.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [MSConfig] C:\WINNT\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINNT\system32\ctfmon.exe
O4 - HKCU\..\Run: [BitTorrent DNA] "C:\Program Files\DNA\btdna.exe"
O4 - HKLM\..\Policies\Explorer\Run: [start] C:\Program Files\NetProject\sbmntr.exe
O4 - HKUS\S-1-5-19\..\Run: [internat.exe] internat.exe (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\RunOnce: [^SetupICWDesktop] C:\Program Files\Internet Explorer\Connection Wizard\icwconn1.exe /desktop (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [internat.exe] internat.exe (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-20\..\RunOnce: [^SetupICWDesktop] C:\Program Files\Internet Explorer\Connection Wizard\icwconn1.exe /desktop (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-18\..\Run: [internat.exe] internat.exe (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [^SetupICWDesktop] C:\Program Files\Internet Explorer\Connection Wizard\icwconn1.exe /desktop (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [internat.exe] internat.exe (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [^SetupICWDesktop] C:\Program Files\Internet Explorer\Connection Wizard\icwconn1.exe /desktop (User 'Default user')
O4 - Startup: Netvision Cable Connect.url
O4 - Global Startup: 11g Wireless LAN Utility.lnk = ?
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Tray Application.lnk = C:\Program Files\Netex Client\NetexTray.exe
O4 - Global Startup: תירגומית.lnk = C:\Program Files\Orelus Tirgumit\TirgumitD.exe
O8 - Extra context menu item: &יצא ל- Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {00000389-CB2E-4FAB-BC54-03FA0B39B465} - C:\Program Files\Netex Client\netextb.dll
O9 - Extra 'Tools' menuitem: Netex - {00000389-CB2E-4FAB-BC54-03FA0B39B465} - C:\Program Files\Netex Client\netextb.dll
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: (no name) - {9034A523-D068-4BE8-A284-9DF278BE776E} - http://www.explorertool.net/redirect.php (file missing)
O9 - Extra 'Tools' menuitem: IE Anti-Spyware - {9034A523-D068-4BE8-A284-9DF278BE776E} - http://www.explorertool.net/redirect.php (file missing)
O9 - Extra button: ICQ6 - {E59EB121-F339-4851-A3BA-FE49C35617C2} - C:\Program Files\ICQ6\ICQ.exe
O9 - Extra 'Tools' menuitem: ICQ6 - {E59EB121-F339-4851-A3BA-FE49C35617C2} - C:\Program Files\ICQ6\ICQ.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {0CCA191D-13A6-4E29-B746-314DEE697D83} (Facebook Photo Uploader 5) - http://upload.facebook.com/controls/Facebo...toUploader5.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/windowsupd...b?1191209704218
O16 - DPF: {6E5E167B-1566-4316-B27F-0DDAB3484CF7} (Image Uploader Control) - http://www.pic4u.co.il/_install/ImageUploader4.cab
O16 - DPF: {D6E7CFB5-C074-4D1C-B647-663D1A8D96BF} (Facebook Photo Uploader 4) - http://upload.facebook.com/controls/Facebo...Uploader4_5.cab
O16 - DPF: {D79B6F43-F214-4E7A-9ECB-CCC8771F2416} - http://www.tapuz.co.il/irc/main/launcher.cab
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll (file missing)
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O23 - Service: NMSAccessU - Unknown owner - C:\Program Files\CDBurnerXP\NMSAccessU.exe

--
End of file - 7995 bytes

Deckard's System Scanner v20071014.68
Extra logfile - please post this as an attachment with your post.
--------------------------------------------------------------------------------

-- System Information ----------------------------------------------------------

Microsoft Windows XP Professional (build 2600) SP 2.0
Architecture: X86; Language: English

CPU 0: Intel® Pentium® 4 CPU 3.00GHz
CPU 1: Intel® Pentium® 4 CPU 3.00GHz
Percentage of Memory in Use: 81%
Physical Memory (total/avail): 479.48 MiB / 89.9 MiB
Pagefile Memory (total/avail): 1122.17 MiB / 822.17 MiB
Virtual Memory (total/avail): 2047.88 MiB / 1921.04 MiB

A: is Removable (No Media)
C: is Fixed (NTFS) - 74.55 GiB total, 42.11 GiB free.
D: is CDROM (No Media)

\\.\PHYSICALDRIVE0 - SAMSUNG SP0802N - 74.56 GiB - 1 partition
\PARTITION0 (bootable) - Installable File System - 74.55 GiB - C:

thank you in advance

Hello and welcome to BC

We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. We aim to provide the valuable service known to come from BC to every member we can, but sometimes it takes just a little longer to get to every request for help.

If you have since resolved the original problem you were having, we would appreciate you letting us know. If not please perform the following steps below so we can have a look at the current condition of your machine.

Upon completing the steps below a staff member will review and take the steps necessary with you to get your machine back in working order clean and free of malware.

Thanks and again sorry for the delay.

Please download Deckard's System Scanner (DSS) and save to your Desktop.
alternate download site

DSS will do the following:

• Create a new System Restore point in Windows XP and Vista.
• Clean your Temporary Files, Downloaded Program Files, Internet Cache Files, and empty the Recycle Bin on all drives.
• Check some important areas of your system and produce a report for an analyst to review.
• Automatically run HijackThis. It will also install and place a shortcut to HijackThis on your desktop if you do not already have it installed. So if HijackThis is not installed and DSS prompts you to download it, please answer yes.

You must be logged onto an account with administrator privileges when using.

• Close all applications and windows.
• Double-click on dss.exe to run it and follow the prompts.
• If your anti-virus or firewall complains, please allow this script to run as it is not
  malicious.
• When the scan is complete, two text files will open in Notepad:
  • main.txt <- this one will be maximized
  • extra.txt <- this one will be minimized
• If not, they both can be found in the C:\Deckard\System Scanner folder.
• Please copy (Ctrl+C) and paste (Ctrl+V) the contents of main.txt and extra.txt in your next reply.

-- When running DSS, some firewalls may warn that it is trying to access the Internet especially if your asked to download the most current version of HijackThis. Please ensure that you allow it permission to do so.
-- If you get a warning from your anti-virus while DSS is scanning, please allow DSS to continue as the scan is not harmful.

If you already preformed the steps above We still need to see the current state of the machine fresh scan and logs are still necessary

click on Start, click on Run
copy and paste the following in bold in the open window and then click OK
"%userprofile%\desktop\dss.exe" /config
This will open up DSS configuration
click on Check All
click Scan
DSS will now run again when finished
Please post back both logs that open in notepad
Main txt and extra txt



Next
Please do a scan with Kaspersky Online Scanner

Note: If you are using Windows Vista, open your browser by right-clicking on its icon and select 'Run as administrator' to perform this scan.

Click on the Accept button and install any components it needs.

• The program will install and then begin downloading the latest definition files.
• After the files have been downloaded on the left side of the page in the Scan section select My Computer
• This will start the program and scan your system.
• The scan will take a while, so be patient and let it run.
• Once the scan is complete, click on View scan report
• Now, click on the Save Report as button.
• Save the file to your desktop.
• Copy and paste that information in your next post.

Due to the lack of feedback, this Topic is closed.

If you need this topic reopened, please request this by sending the moderating team
a PM with the address of the thread. This applies only to the original topic starter.

Everyone else please begin a New Topic.