In Mac OS X 10.6.7, Apple introduced a bug where if you have a document containing OpenType fonts, and used the OS X PDF engine to generate a PDF, you could have trouble opening it in Adobe Acrobat or printing it to to a PostScript printer. Apple has now addressed the problem through the Snow Leopard Font Update.
This bug may seem obscure to some, but OpenType is a high-quality cross-platform font standard that professional designers rely on, so it was messing up some workflows. Also, OpenType fonts are bundled with some Adobe Creative Suite applications, so you may have those fonts on your computer even if you don’t remember installing them.
For some time now, Adobe has been advising customers that some Photoshop CS5 crashes were traced to bugs in the font code in Mac OS X. It appears that Apple has now fixed many of those crashes in today’s release of the Mac OS X 10.6.5 update, according to Photoshop engineer Chris Cox in a post at the Adobe support forums.
If you’ve experienced these crashes (I haven’t), download Mac OS X 10.6.5 and you’ll hopefully see an improvement in Photoshop stability. As always, I recommend downloading the Combo updater if you’ve got the bandwidth for it.
On a side note, if you’ve got a new camera and you’ve been waiting for Mac OS X to support its raw format, check the list of camera raw formats added in 10.6.5. It contains new support for some notable recent models such as the Canon PowerShot S95, Canon EOS 60D, and the Panasonic Lumix DMC-LX5.