Just in case anyone has been living in a hole and doesn't know yet, Apple has made available Mac OS X 10.2.6.
I think this just might go down as the quickest update to Mac OS X since 10.0 appeared. I'm willing to be that one of the major reasons this update appeared so quickly (let alone at all) is the highly-reported problems with USB hubs that 10.2.5 had (although I never experienced any of those problems). However, many other improvements are listed at the page linked to above.
The update is currently only available via Software Update, although I'm sure a standalone installer is only a day or so away.