Win32:Kates-AT

Is this trojan automaticaly renaming itself before spreading? Mij computer uses Avast 5.0 home (free version) and warns for win32:Kates-AT.
Avast quarantine-voult gathers numerous files, all named “fmlo.tmp”
Downloads and executing apps (including shut-down) gives problems, in general the computer is terribly slow. Windows Explorer (v. 7) chrashes and needs rebooting.

I need help, till this moment I have used Avast for about 4 years (very satisfied up till now) and never was hit by this sort of trouble.
Please share your knowledge with me.

Check your computer for Malware with

Malwarebytes Antimalware http://filehippo.com/download_malwarebytes_anti_malware/
after install click UPDATE and run quick scan, click on REMOVE SELECTED to quarantine anything found

SUPERAntiSpyware http://filehippo.com/download_superantispyware/
Are cookies really spyware and are they dangerous?
http://www.superantispyware.com/supportfaqdisplay.html?faq=26

If anything is found come back and post the scan logs here

ThreatExperet
http://www.threatexpert.com/report.aspx?md5=c1e9b32bc855a37290c3aac39f77168c

Virus Detail Win32/Kates Family
http://www.ca.com/us/securityadvisor/virusinfo/virus.aspx?id=81224

Pondus, thanks for your info. Interesting to read!
Hope that it will help in solving the problem.

Have already used Avast, AdAware, Malwarebytes, Spywarefighter and Spybot Search & Destroy.
Only Avast calls detections (p.e. when I open a appl.), the other progrs call no contaminations or report “Nothing found”
Will try OTL at last and hope tHAT avast can update the lib. so it cleans my system after the next update.

Greatings Paul