Last two patches? You mean 224b1 and it's update 224b7? Been a while since I was hot on this subject. Yes I seem to recall they fixed issues with ATi cards in 224. Shame they never bothered to go beyond 224. Think Westlake (the porters) made some excuse or other about not having the source code from Epic or whatever but meh.
I remember I loved Unreal but I could only play it at the time on my G3 iMac which had a Rage 128Pro or something along those lines. Also happens to be one of the few ATi cards 224 didn't fix. Causes the lighting to be completely screwed and everything looks black or just really dark. The only way to fix it is to play in software rendered mode which looks pants.
In the end I just consigned it to "never getting fixed" pile and bought a used copy of Unreal for the PC. Never looked back, especially with the OldUnreal patches now. Talking of which, the guy that operates OldUnreal made an OS X port of his patch, but wouldn't you know... Epic denied him permission to release it. No idea why. Still that's just one issue of many to do with Unreal and Unreal Tournament on the Mac. Like Ryan Gordon giving up on on the patch 451 port for OS X because the renderer sucks balls so hard it needed rebuilding from the ground up, and the fact UT3 never saw the light of day on OS X even though it was pretty much finished and ready to be released.
Ah well.