I gave feedback to Apple on their website about the text on web pages that disappeared. They fixed it in this version. I was happy to see that they were listening.
I don't know if it was an issue with older Macs or not. I don't know how much of it had to do with Quartz Extreme being supported or not.
All I know is that the text doesn't disappear from my weblog anymore when using ANY version of Netscape, Mozilla, or Chimera. It affected all of them on my system. It also affected Internet Explorer. I had to turn off the text smoothing in I.E. to keep the words from disappearing.
For another example, the text is not disappearing as I type this. It used to. It kind of makes it hard to write posts on a weblog or forum if the words and sentences disappear as you type them.
Also, iChat does seem to be a bit more responsive than it was. I had problems with it for a while, too. Sometimes, you would be sending instant messages like mad, and they would never be seen. This goes for incoming instant messages as well. I haven't used it enough, though, since 10.2.2 was posted, to know if they fixed all of the bugs in it.
Overall, for my system, 10.2.2 was a much-needed upgrade. It fixed bugs I have had for two months.
Thank you, Apple.