BleepingComputer.com: Vista Updated and now ERRORS

I came home from a business trip, and Vista had updated and restarted - now I get things like "Superfetch has stopped working" and other such errors. Reboots out of the blue as well.

Here are the details of one:

Problem signature:
Problem Event Name: APPCRASH
Application Name: svchost.exe_SysMain
Application Version: 6.0.6001.18000
Application Timestamp: 47919291
Fault Module Name: sysmain.dll
Fault Module Version: 6.0.6001.18000
Fault Module Timestamp: 4791adbd
Exception Code: c0000005
Exception Offset: 00000000000181db
OS Version: 6.0.6001.2.1.0.256.1
Locale ID: 1033
Additional Information 1: b691
Additional Information 2: 568b44688cc778529db8eca4d9b2f849
Additional Information 3: 2c7f
Additional Information 4: dd5220830626d03b0020484f8b9ec442

Help!

Thanks

Vista Ultimate 64-Bit

Hi, go to system restore and restore from before the updates were installed.

sysmain.dll can either be malware or your Superfetch service.
Try a couple of these free, online scanners to see if anything has slipped by your protection:
(Be advised that some of these scanners will pickup things in "quarantine" from other anti-virus programs - so review the results carefully)

http://www.pandasecurity.com/homeusers/solutions/activescan/
http://us.mcafee.com/root/mfs/default.asp
http://housecall.trendmicro.com
http://www.bitdefender.com/scan8/ie.html
http://support.f-secure.com/enu/home/ols.shtml
http://onlinescan.avast.com/
http://ca.com/us/securityadvisor/virusinfo/scan.aspx
http://www.eset.com/onlinescan/

http://www.kaspersky.com/virusscanner Scan Only - no removal
<links compiled on 02/14/2008> <links reordered on 09/10/2008>

If you find that you're infected (or the scan doesn't complete or closes unexpectedly), post in the Am I Infected forum located here: http://www.bleepingcomputer.com/forums/forum103.html
If you're not infected, post back here and we'll try some more stuff.

If not infected, post back and we'll have a go at disabling the Superfetch service temporarily.