Re the updates, on my main PC, I just leave in up to Suse's online update which I usually run once a week. Firefox 1.0.4 hasn't come through yet but I'm sure it will soon if needed.
I really like the system as just about everything I run is covered. Firefox could be patched in the same job as a Linux Kernal update, an Apache fix, as an open-office fix, as an acrobat fix and it all (except a couple of kernel fixes where a reboot has been recommended) goes through without a single reboot.