It's worked well for me, using Firefox with that-which-shall-not-be-named-here installed. However the brand new, all-singing, all-dancing AB is due to be launched on Monday. Maybe that will help you?
Up until a few weeks ago I had to access AB through library computers as I wasnt on broadband and it was a nightmare...freezing pages etc. (dont know what system the library was using)
since getting back on broadband its certainly better but still have a few issues but not certain whether or not its my lappy, internet connection or AB itself.