Vista Re-start Question

Physsicz

Whilst re-starting my computer with Vista Ultimate x64 with bitdefender 2011. I had a black screen with the message, your Antivirus Solution is cleaning .... etc a message flashed saying Deleting.. then continued to load as normal, Im a bit vauge on the complete message as it happened pretty fast, I've checked everything I can and i've found no rogue prog's or anything, can anyone confirm this is part of bt or should I check further, im also using XoftSpySE and will be checking that also, but im covering all I can!

I've re-started a number if times since and nothing has shown up and scan's have not picked up anything.

anyone know or have any idea about this?

Thanks in advance

.