Firefox needs improvement
I hope they manage to improve reliability and speed as Firefox 3 crashes consistently for me and is extremely slow compared to earlier versions. I can't use it on my netbook as it's too slow.It also seems to update continually and find addon updates every few days which is extremely irritating - open source software seems to have far more updates than Microsoft, not to mention Linux versions change completely every few months! (I'll leave the rant about how useless Linux is on the desktop unless it's provided pre-installed to another day.)
Firefox is also getting too complicated IMO - part of its charm at first was being simple, quick and reliable. Maybe they should make a "lite" version with all the new things stripped out.