well, i actually looked up the 10810 thing on google, and it's rare to say the least. apple dev's seem a bit clueless about it, so i'm guessing it's not common on "real" macs. there was a post on the apple forums that said this could have something to do with LaunchServices database needing to be rebuilt. the guy gave a link to an app that would do this, but i'm a little hesitant to try it out. i don't want to screw my install up anymore than it may already be. regardless, here's the post if you've got the cajones to try it yourselves (i have a feeling it wouldn't help though): http://discussions.apple.com/thread.jspa?threadID=1201327&tstart=60 (scroll down to MarkDouma's post for the app)