Thought I would share this as it might help someone else: I have a MacBook Pro (17") which will turn 2 years old in April. About a month ago it started to randomly shutdown - and I mean like instant shutdown, no warning! After some googling, I discovered it's a common problem with this model's battery, and that it's also prone to "battery bulging". So I took the battery out for inspection and sure enough it had begun bulge. Further research (as mentioned previously on WAMUG) led me to Apple's article extending the warranty from 1 to 2 years for MBP battery bought up to April 2007 (mine just scrapes in).
So I took the battery to an Apple service centre on Scarb Beach Rd -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au>