I am having the same problem with vsserv.exe that everyone else here is having. It sounds like Bit Defender has known about this problem for over a year and has done nothing about it.
Is the 2011 version out yet and if so, is the problem still there?
My license is up for renewal in less than a month and I have started researching other programs. If there is no indication that this problem has been fixed, I will dump Bit Defender and find another product.