I have been in contact with Aspyr tech support for 3 months now. It's a long story, but I'll try to keep it as brief as possible The issue: SimCity 4 became unplayable after updating to 10.4.3 on my PowerBook (10.4.4 is the same). The game will launch, but plays extremely, unplayably slow, and is riddled with graphics anomalies. Yes, I am aware of the speed/graphics difficulties with this game as reported in the past, in this forum and elsewhere; this issue is different, clearly some sort of bug. The game did play normally up to and including 10.4.2. Yes, I could install a partition on my HDD with a different version of the OS, just to play SC4, but I'd really rather not waste all that space just for this. The problem should be fixed. I've tried every other workaround they suggested, to no avail. Aspyr has recognized and reproduced the problem in their lab, or so they tell me. It only affects computers with the nVidia GeForce FX Go5200 (so, the rev. B-D 12" PowerBook G4), running Mac OS X 10.4.3 or later. All versions of the game are affected: standard, standard w/ expansion pack, and complete. Aspyr has told me that because they have not received enough complaints about this admitted bug, they have prioritized it as 'low' and will not 'move it up the priority list' (and publish a patch) unless they hear from more disgruntled users. So, if you're out there, please write to Aspyr, using the form at support.aspyr.com. I'm not asking anyone to lie, hopefully posting this will lead to some legitimate responses, light a fire under Aspyr, and get this fixed. This is not an altogether unwarranted hope, they have encouraged my suggestion to do this. By the way, soon after 10.4.3 came out, Aspyr issued Patch C for The Sims 2 which "Fixes a conflict with NVIDIA video cards and OS X 10.4.3." So, I think they know how to fix this, they just need to get someone on it. Thanks in advance for your help!