timeline not refreshing on ff3/mac

since i updated ff3, my timeline in not updating. i have to manually refresh the timeline. i've disabled all my extensions and add-ons so i'm not sure where the problem lies. i've also emptied my cache, authenticated sessions and restarted my browser obviously.

any ideas? it seems i'm the only one with this problem

i'm on:
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0