As has been widely reported, Mozilla are now releasing new versions of Firefox on a 3 monthly cycle, to keep them hot on the heels of the competing Google Chrome browser. This makes Ubuntu Linux's release schedule look positively lazy.
ZDNet UK's very own Ben Woods highlighted Firefox 5's focus on security and privacy. I have noticed, however, a couple of add-ons not playing ball with this relentess march toward a brighter, faster, securerer future. A personal favourite add-on is SiteLauncher, a hot-key based site launcher, similar to GNOME Do, Launchy and QuickSilver. But for a browser. Version 2.1 didn't want to play ball with FF5; you have to manually edit the install.rdf text file in the .xpi file to allow versions higher than 4 (see Reviews on the Add-on page for instructions.
I guess the point is that progress will leave some people behind, and as progress progresses faster, then the gap can only increase.