Here’s some bad news for Apple users with older machines: the new release of OS X, Mountain Lion, will no longer support the Intel GMA x3100 chip or the Intel GMA 950, MacGeneration reports.
So if you don’t have either an iMac later than mid-2007, a Mac Pro from at least early 2008 or any computer with a newer graphics chip, it looks like Lion will be the last possible Mac OS you can run.
I for one will have to upgrade as I only have a x1300 chip, and it will be interesting to see what others do who have the same problem. Will they even bother to upgrade the hardware or will they manage with Lion 10.7?