Unsurprising
FireFox just isn't very good these days. Its much slower than Opera 10.6, taking a very noticable time to scroll El Reg's front page back to the point I was looking at after I exit a story. Opera is there instantly.
Unlike Opera it crashes. Some movies (flash IIRC) just cause it to suddenly vanish and its PDF viewer seems to coredump regularly.
In case you're wondering: FireFox 3.5.11 under Fedora 12 on a Core Duo based Lenovo laptop.


