Final Cut Pro 7 has been continually crashing on me, citing my graphics card as the reason. I also get lots of "out of memory" errors, when I have plenty of hard drive space, free RAM, and relatively simple sequences. I doubt that my graphics card is the real problem because I just got a new one in November. I've been editing high res video files on this computer for almost 4 years with no problems until now. I tried to use Disk Utility but the "Repair Disk" button is grayed out so I tried "Verify Disk" but it says that my disk is corrupt and cannot be verified. I've read postings that say to start up my computer with the installation disk, but I no longer have it. Any thoughts? Should I try upgrading to Lion? I'm just hesitant to do that because I'll probably end up replacing this computer soon anyway. Computer specs: 15" MacBook Pro ~2008 2.5 GHz Intel Core 2 Duo 4 GB RAM Graphics Card: NVIDIA GeForce 8600M GT Thanks.