I've been trying out Firefox 3.5 RC 3, and so far I like it a lot.
Except, I've noticed that with http://openstreetbugs.appspot.com/ that the mouse cursor doesn't change to a crosshair after you've clicked the green + button.
It's not a major bug, as marking locations still work.
I guess it's a bug with openstreetbug and firefox 3.5 :P
Apart from that minor gripe, I've been doing quite a lot of surveying of country roads and inner city.
I'll be going to the Canberra - Australia mapping party that's coming up soon, so I'll see some fellow OSMers there!