I have not had any significant problems with ABP, but after trying out HTTPSB earlier this week it's become my most essential extension. It's not as user-friendly as Ghostery, ABP and a few others, but I really appreciate its ability to quickly show me what's actually happening on a given page. I would love to see it develop into a general-purpose diagnostic tool. After only having it installed for a few days, it's hard to imagine life without it - which is about the highest compliment I can give.
Same - I installed HTTPSB as a dec tool, but ended up liking how much control it gives back to me about what is loaded on my pages. There was an initial period of frustration as I had to unblock the bare minimum required to make youtube/gmail/vimeo/facebook work as expected, and after that it's smooth sailing. ADP is gone, and I feel like I get my pages quicker and cleaner.
