I never knew a program, which had so many complaints as Bitdefender, I'm really disappointed on buying a license for AV 2010, I have posted some of the problems that this particular AV had on my system, and it seems there's no solution for a single one.
My internet connections drops if I use several programs at the same time, there's a recommendations on the fix issues to download microsoft garbage on my system, which I not very keen on that, I don't know what happened to this year's AV., Bitdefender used to have a big reputation on the Antivirus scheme.
Solution: Desinstalation on the Antivirus, less problems and worries than the use of it.