Mac OS X 10.4.3
If you haven't noticed already, Mac OS X 10.4.3, the updater is out. Apple fixed a bunch of stuff, but the most notable improvements lie with Core Image. In an earlier blog, I was commenting that I had gotten a Radeon 9800 SE card for my G5 1.6 GHz. I said that I hadn't noticed any real improvement since adding the card except that Core Image was a little better.
With the new updater apparently Apple wasn't happy with the performance of spotlight, or Core Image, because now everything as far as Core Image and spotlight are concerned are much snappier. Spotlight is finally faster than using Windows XP's old metadata-less search function. It is usable now, and it seems to be taking up fewer clock cycles than 10.4.2. I'd definately recommend this update, especially for those 1 GHz iBook G4 users out there. I noticed that my iBook no longer felt like it was chugging through molasses. It still isn't as fast as the newer iBooks with upgraded memory subsystems and Radeon Mobility 9550s, but I'm glad to see that Apple hasn't abandoned its older hardware.