> Personally I think it is an excuse to get people to upgrade. I see absolutely nothing that would require a crazy new video card. (I've been running ML for mon

> Personally I think it is an excuse to get people to upgrade. I see absolutely nothing that would require a crazy new video card. (I've been running ML for months) The 32-bit Kernel no longer exists/is no longer maintained/was not upgraded for Mountain Lion. The unsupported models have video cards that do not have 64-bit graphics drivers available for them. The 64-bit Mountain Lion kernel is incapable of loading the old 32-bit graphics drivers for these cards. Thus these video cards are literally incapable of supporting Mountain Lion.