There are a handful of Macintosh users who are suffering problems from the recent update to Mac OS X 10.4.9. Based on the comments in the blog entry below and the thread links provided, it isn't an isolated incident, nor is it the same problem for everybody. The author, Pete Mortensen, warns his readers to possibly reconsider the update, based on the problems described to him. I would just advise to make a disk image or a backup to removable media, as with any service pack or equivalent release. Is this just the typical problems that users may experience with a fairly large update, or is it something more? Neowin members, if you own a Mac – have you updated, and if so, has the update gone smoothly, or do you have a story to tell?
News source: Wired Blogs