I've been quite happy with BD until my licence approached renewal time. First, I think I got 5 days notice - not a lot and not enough as, for much of this time, I was interstate with no internet access. Next, I could not upgrade my V10 but had to update to BD 2008. OK but then I had trouble paying for it; contacted BD tech support re this but they obviously cannot read because they provided me with installation instructions. I downloaded, but could not install, BD 2008. Firstly, it wanted me to uninstall my BD-10, which is ridiculous but I complied. BD 2008 just stuck its finger in its ear and then zombied my computer. This was on the final day of my licence and, at this stage, I had been without AV protection for many hours. At this point, I had no choice but to grab a freebie from elsewhere.
My wife uses a second PC with Bitdefender. Because we had visitors, she had not touched her PC for days and, in particular, had not upgraded BD. Today, she started up her PC, hoping that an out of date AV package was better than nothing. Imagine her surprise, and mine, when BD kindly informed her that the licence had expired and BD was no longer working. This is absolutely outrageous. I have NEVER heard of an AV package that just dies when it is out of date.
I will never even consider buying back into BD under any circumstances.