"Mac OS X 10.4 (Tiger) is freezing after 2-3 hours, as soon as i launch a Program in full screen mode, and also with Quicktime 7.xx in Safari. This doesn't happen with Mac OS X 10.3.x (Panther).

"On my Mac intel mini Toast 7.1.2 will not burn DVD-R discs, errors out with a message 'could not record because of a Mac OS X error' ---- plus this 'Result Code = -13780'" Richard Stout adds: ...

Pay careful attention: When you hear the Mac start-up sound as the computer gets ready to launch, hold down the Shift key. A gray Apple logo screen will appear – when it does, release the Shift key.

On many Macs the screen may be so dark that you might not even be able to tell if the Mac is turned on – move your ear close to the computer to see if you can hear it whirring away. Fix 1: Give ...