The Ultimate Trouble Shooter http://www.answersthatwork.com/TUT_pages/TUT_information.htm will not run in either WinXP or Win7 with Bitdefender 2011 installed even if I add it to the exclusions list in AVC. BD causes Access violation errors in TUT. As soon as BDAV is uninstalled WALLAH, TUT works. TUT also works in safe mode. TUT works fine with BD 2010 products.
PCTools Firewall will not work with BDAV Pro 2011 in Win7 (In fact crashes the computer every time) but does work with WinXP. The firewall in BDIS is painfully complicated and inadequate and I really dislike that BD isn't far more compatible with other programs. I use firewalls to block programs from connecting to the internet without my knowledge and BDIS is really inadequate when it comes to that.
Whenever I deal with Bitdefender it costs me money. Every install comes with, how many more times will I have to install and uninstall, send stuff to support and what programs won't work.. etc etc. I got in trouble because I recommended the program to some of my customers (I repair computers) and now I have to deal with all their questions because many of them or 70 - 80 years old and just don't know or want to come to a forum like this to resolve problems that shouldn't be happening in the first place....never again will I recommend BD anything to anyone else.
Your marketing department seems to think incompatibility works to lock customers into a full security solution, but in my case it has a directly opposite effect, it drives people away. If your going to block other programs make yours better than theirs.
I hope to see a friendlier BD in the future. I was hoping 2011 was it, but it is even worse than ever before and that's bad.