My Computer has been acting wonky lately (What else is new?) Its a CD MPB 2.16, 10.4.9, 2 gigs APPLE RAM. I have been getting a lot of dropped frame notices in Soundtrack pro, and it straight up froze yesterday while running a live show..... That = NOT GOOD. I ran ONYX, and it said something was wrong with the startup disk. Out comes Disk Utility. When I click "verify disk" I get an error after "Checking Catalog file" that says Invalid node structure The volume Macintosh HD needs to be repaired Error: The underlying task reported failure on exit So, out comes the Startup DVD. Run Disk utility, click "repair disk" I get the same error, "the underlying task reported failure on exit" and it won't fix it. Whats the deal??