Some people have reported that NSPluginwrapper crashes with the new Flash 9 Update 3 (9.0.115) plug-in. It turns out this is triggered in multithreaded context and is more visible on SMP/CMP machines. If you have crashes similar to those reported in RedHat #360891 or Ubuntu #177856, please try the following patch, or use this source snapshot for the upcoming version 0.9.91.6.
As a side note, I revived my Antec Aria box with a new PSU. It was somewhat kludgely to replace due to the many cables in there but it now works and is even more silent than before!
To SheepShaver users et al., I don't forget you either. Lately, I was working on a new video back-end using OpenGL for rendering. However, I still think MacOS X is under-efficient for graphics. In particular, the MacOS X kernel is so slow, wrt. Linux on the same machine, that it prevents some further optimisations, e.g. intercepting illegal writes to write-protected memory to track emulated video memory changes (dirty pages). I am not convinced that Leopard brings the expected performance improvements either, Mach syscalls and signals delivery is painfully slow!