CNY is tomorrow if you are in the USA :)
dunno..... I just couldn't imagine someone trying out all of the linux distros....
because my computer died right after I updated? (2 times in a row too.)
The only thing that comes remotely close to modding I did was installing mac ports (the mac package manager, like apt for debian-based distros) lol
I haven't heard of any Apple update as of late having problems.
The only thing I can think of is something you did to the system that had a very fatal effect whith something critical in the new update.