I have checked and found nothing about your problem.. Ashame to say do I not have any computer with XP Home edition so I can't tell if its OS related or if you had a "bug" of any kind in your system.

winkdr.exe seems familiar though, but I can't remember when I have stumbled over the name earlier. Maybe from a similiar and sluggish system you got your hands on

It does not have to be a virus, it may also be a bad driver or application needed by some specifik hardware or program you use. It would have helped if you had the faulty system intact for thorough examination .

I wish that I could be of better help, maybe someone else do know more ?

~micael
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Edit: Your subject line seemed a bit faulty. If it's the path to winkdr.exe you have there you have searched for wrong file. c:\windows\system32.exe \winkdr.exe is probably not a valid path and you should probably have searched for system32.exe.

System32.exe is a known virus file and amongst several viruses does the worm W32/Mari@MM use this file and does also run as a hidden service.