updated 12:05 pm EST, Tue December 16, 2008
Mac OS X 10.5.6 crashes
Some users attempting to download and install the Mac OS X 10.5.6 update are are running into critical errors, discussions on Apple's support forums reveal. The most common problem consists of crashing or hanging, whether in the middle of an install or immediately thereafter. The crashes may be accompanied by kernel panics, though the contents of these panics can vary.
A number of different solutions have been proposed, such as repairing from the Mac OS X Leopard install disc or downloading the Combo update from Apple's website, but no universal answers have so far been discovered; anecdotes suggest that Genius Bar technicians may decide to have a Mac's logic board replaced. One MacNN reader observes that in speaking with Apple's phone support, a representative claimed that Apple is already aware of installation problems.
Less serious issues have included USB devices attached to Apple keyboards ceasing to work, which may be fixed by connecting directly to a powered port, such as the ones on the back of an iMac. The update also appears to have disrupted a large number of Time Machine backups, failing to recognize drives properly or at all. No fix has been found, and the problem is ironic, as fixing the detection of Time Machine volumes was one of the intended purposes of v10.5.6.