So I'm pretty sure that this question has been asked and answered at some point, but I really can't handle looking through the huge number of results I got when I searched the forums (maybe everyone's talking about Leopard or something... ). For the last few releases of OS X, how good has Apple been about fixing bugs in a timely manner? How long after they release 10.x.0 do they usually release 10.x.1? How long until the OS is essentially "bug-free"? (I consider Tiger "bug-free". I know it's not, but that's what I consider "bug-free") I know Leopard has been very stable in the last few builds, but IIRC, there were still some issues. I'm a new Mac user, so I've never had to do an OS upgrade. Pardon my ignorance.