Look, I realize that this post isn't concerning OmniFocus (I am seriously considering the idea of referring to OmniFocus as “Marcia”, but I cannot bring myself to refer to Graffle as “Jan”), but I don't want anyone to panic.
Really, I don't want any panicking.
Especially of the Kernel Panic variety.
A very small number of users have been reporting kernel panics on their Intel-based Macs in Mac OS X 10.4.9 when saving files with the OmniGraffle 4.2 beta releases. We are investigating the issue and of course would very much like to fix it if it's a problem in OmniGraffle. Therefore, it's recommended that if stability is absolutely crucial, you should run OmniGraffle 4.1.2, available at our Download Page . However, if you are a brave soul who would like to hazard a kernel panic, we'd also very much like to get your feedback, so that we can look at the data as well as pass it along to Apple.
That said, among the various bug fixes and crashes addressed in this release, OmniGraffle 4.2b4 also sports a significant change to how it handles its autosave backups – Now that it requires Mac OS X 10.4, we're taking advantage of storing that information in a more proper location, with the added benefit of newly-created documents that have yet to be saved gaining a backup as well.
Please to read the release notes.
As ever, the scary beta download page awaits.