Not that I know of....
BitDefender Anitvirus software has nothing to do with Avast. There are some other antivirus software that are using the BitDefender scan engine, but that's not the case here.
The problem is probably caused by an old nick-name of Windows Defender.
|BitDefender Antivirus 2009 and Vista||System Security|
|Problem caused by Bitdefender Antivirus||Vista security|
|Bitdefender Antivirus 2008 Installation Problem.||System Security|
|Bleu screen caused by Antivirus Sotware||Vista security|
|Cannot delete a problem caused by a new USB add-on||WinFX General|