I want to revive this thread and say that I'm plagued by these messages as well. I tried doing a LaunchServices rebuild as suggested at <a href="http://discussions.apple.com/thread.jspa?threadID=1201327&tstart=60#6080118">th is apple discussion thread</a>, as I believe it is related to a "-10810" error, jerking mouse problems, and other performance issues that I and others are having. However, this didn't help the problems. Zeph, if you're listening, what's your take on this one? There are many of us suffering from these issues and others like it. You can see all of our stories, trials, errors, and more here at <a href="http://osx.kbot.de/comments.php?DiscussionID=753">this thread</a>.