Yesterday my Mac Pro 1,1 (2007) running 10.7 started freezing up. It keeps on doing this after restart. Usually it will perform one task, but when asked to do a second, it freezes. The cursor will still move but I can only do a hard reboot to get out of the situation.
It is independent of which software I start up.
I have installed a SSD drive for the System OS; upgraded memory to 14 Gb installed a new graphics card.
DiskWarrior 4.3 will not deal with my drives because my OS is too new (although 4.3 should be compatible with Lion) but it did do a diagnosis of the drives and found nothing wrong with them (it did report a few files with problems). Disk Utility also tested the drives and found no problems.
Should I test the memory? The added memory is about 5 weeks old, though (2x4Gb Kingston). Or could this still be a SSD failure?