Critical Error AND TROYAN.BACKDOOR on rpg-club Updater

[sccs]

Im Allways use  rpg-club updater to open my client, but this last time i get critical error just when I press "start" and the antivirus (kaspersky 2010 full updated) found this:

15/04/2010 09:01:07 p.m.   Detectados   troyano Backdoor.Win32.Bifrose.clxu   http://update.rpg-club.net/update_gf/rpgupdater.!!!.exe.5c80e488.pack/rpgupdater.!!!.exe      

so Im afraid to log now, plz check it and let me know if u can fix it or u find why this happens

greetings

[Shabaka]

It should be.