I just realised that I have, almost without trying, avoided the dreaded Spinning Beachball of Death on Mac OS X. My Mac backups cover all OS from 6.08 -> 9.2.2, but I switched over to Win98/XP just about the time of the OS X introduction. My interest in Apple waned over the years, as they trialled many different themes (and they're STILL CHANGING!). My interest only returned when OSX86 became mainstream around Leopard 10.5.2. I have a pre-release version of Mac OS X 10.0.1, which is buggier than hell, and software written for 10.1 will not run on it 
I remember trying to install 10.3 onto an old iMac (slot loading) with not enough RAM, and no eject on the CD drive. It was a trying experience...
I can in all honesty say that I have not experienced the worst that OS X has to offer. The SBOD is almost entirely a historical entity these days. Who knows, the animated cursor may have already been replaced in Snow Leopard!
You can keep this thread running by posting your worst SBOD moments, and what you think caused them...
Cheers.
