Logging Off of Windows XP Home Edition

When i attempt to log off of windows i get and error
message that involves the Wupdater.exe file. This is
followed by a message that the system is not responding
and gives me an option to "end the program now". I
should return directly to my user screen without
receiving this message. This proble just sort of
appeared from no where. Obviously a file has been
corrupted. Can you provide a fix for this problem?
Thanks
Eric

>-----Original Message-----
>When i attempt to log off of windows i get and error
>message that involves the Wupdater.exe file. This is
>followed by a message that the system is not responding
>and gives me an option to "end the program now". I
>should return directly to my user screen without
>receiving this message. This proble just sort of
>appeared from no where. Obviously a file has been
>corrupted. Can you provide a fix for this problem?
>Thanks
>Eric
>.
>