I was getting the dialog box with “Parser Message: Value creation Failed at Line 422” whenever my computer went into screen saver mode. Turns out that my computer was infected with the blazefind trojan. Fortunately, it has a easy fix.
Use the Windows Setup floppy disks or the Windows CD-ROM to start your computer. At the “Welcome to Setup” screen, press F10 or press ‘R” to repair.
At C:\windows (or winnt)
type cd system32 the directory should now be
C:\windows\system32
type :
copy userinit.exe wsaupdater.exe
1 file should be copied, now REBOOT!
There is also a detailed description of the trojan at Experts Exchange.