Hi All

I have posted this as a warning about a possible new and extremely disabling threat to your PCs and also to see if anyone has had this and found the fix!

My desktop computer is U/S at the moment - it just logs straight off if you login as any user.
(I had last left it running a virus scan, after which it is set to go into Standby).

AVG Free Edition run in Safe Mode reports problems with the MBR on my boot drive, which is questionable, since the computer starts OK.

I also found "Zangolabs.exe" sitting on the Desktop, but where it came from goodness knows.

Searches on the WWW about the Login/Logoff loop come up with an issue relating to the Registry and "wsaupdate.exe". I have followed the procedure documented in several locations but this issue does not appear to apply to my problem.

I ran a repair of XP but the problem persists. I am trying to avoid a complete reinstall as I have about a fortnight's work to recover everything.

I will keep you posted on progress - if I can help anyone avoid this I will.

Regards,

Steve