Puzzled....

[Jean-Marie Monnier <kedves () attglobal net>]

Since mid day today, I am flooded with interrupts from AVG resident 
shield  yelling at me; and saying, in a nice little box..:.
=================================
Virus                                                               !  
Trojan horse Downloader Crypter C             !
                                                                        !
is found in file                                                  !
C\WINDOWS\TEMP\WKNxxxx.exe           ! <=  (xxxx taking all kind of 
values, the most recent one being A0803 )
                                                                        !
to remove this virus, run AVG for Windows !
____________________________________!

Running AVG doesn't find  anything.....   Any clues?    Thanks in 
advance for any... jm    (retired IBM'er... yes, it shows.. :-[ )