Installed the free version on two different Computers (Win 7 32bit and Win 7 64bit). First, everything went fine, except for the repeated nags to eventually register. So, that's what I did.
As a result, I got unbelievable lags on BOTH computers. I would do a task (as in: any task) and all of a sudden, the computer would freeze for a minute (with Windows' blue "please wait" icon spinning).
Next thing, I decided to uninstall via the native Windows uninstall routine. That failed though - Bitdefender couldn't be removed, but it broke things on BOTH computers. Loading the Desktop failed, Standard users not being able to log in anymore, permission issues, basically all important services deactivated.
Next: Download the Bitdefender uninstall tool. You see, this is a lot of fun especially when the program you want to get rid of has screwed up your system to a point where you can neither access the internet, nor plug in an USB stick so you can run a program that you have downloaded elsewhere. But I am digressing: Uninstall tool didn't work either (should I say "of course"?), so in the end I had to painstakingly figure out what you guys did to my system, and make the needed changes by hand, like restoring proper permissions to crucial system folders, activating essential system services or deactivating the Bitdefender service which your uninstall routine either couldn't or didn't want to.
At least my system is back up and running now, and I can work again. Some things, of course, are still screwed up and I may never be able to fix. For that, and the weekend you cost me to rescue my systems, see thread title.
Verdict: You guys are morons. I have every understanding that, even with a thoroughly designed and maintained product, there may be an unexpected glitch that can cause things to go haywire - and even with the utmost carefulness by the programmer, consequences for the user may be undesirable. But with Bitdefender, NOTHING works: Program is buggy, uninstall fails, and the program you issued because it seems you already knew that you the regular uninstall routine is crap, is crap as well. On top of that, if this only happens on one computer, it may be because of unforeseen settings/circumstances on that machine - if it happens on two computers with very different settings, specs and OS flavors, its just very clearly the result of kamikazee programming.
So at least I can save the time to give more information, you guys couldn't deal with it anyway. Go jump off a cliff, the world will be a better place for it.