So here's the progression of events: about a week ago, noticed that the battery in my 2011 MacBook Pro was failing -- absolutely doesn't take a charge. Reset PRAM and SMC, no change. Two nights ago, computer wouldn't start appropriately...it would chime, get to apple logo and spinning gear, and then restart. Ran Disk Utility, which told me that there was a problem (forget exactly what it was -- somewhere in the file structure, 5657 found, expected 5656, or something like that). Problem fixed. Now, the computer boots normally and seems fully functional (with the exception of the battery), but the geekbench scores are around 2800 instead of around 11000. Anyone have any idea what I might have done?