That's a very niche problem. However, it's a perfect example of why most people should wait at least a couple of months before upgrading to the newest version of an OS, regardless of whether it's Windows, Mac OS, GNU/Linux, etc.
I run Mac OS X Leopard on my laptop, and specifically chose not to upgrade to Snow Leopard. If a computer needs to be stable, don't upgrade it until the new version's bugs have been discovered and fixed.

