Hi, having used Bitdefender on Win 7, thought it would be ok on my brand new install Win 8/Win 8.1 which is about 10 days old. Hmm. Wrong.
I had been running AVG; uninstalled that. Bitd. complained about Spywareblaster, so that was uninstalled. Ok.
Installation proceeded.. but stuck at 67%. No significant processor use.
Left it for 20mins or so, restarted manually. About 3 or 4 restarts later, after being stuck with 'installing services' and a blue screen etc etc it appeared to be installed.
But .. odd things happened. Cleartype was now off; I couldn't close an open dialogue of Wordpad with X, only the main dialogue; Filebox extender now opened a new explorer window, instead of changing the existing one. Unacceptable. Oh, and the Window title bar was thinner.
Uninstall... no - wouldn't complete. Had to use the removal tool. System restore to fix above issues.
Tried again after cleaning up.. stuck at 67%.. waited an hour.. manual restart- seemed installed. But issues above pertained.
Total removal- install Avast. Bye bye Bitdefender.