Temporary workaround for me. I also posted this in another thread about the finder not responding. Here's the text of the posts from the other thread that lead me to try this solution. Sorry if the quotes make it hard to follow. I couldn't figure out how to link to a specific post within a thread.
These are both from the following thread:
http://discussions.apple.com/thread.jspa?messageID=12749687#12749687
<<<Getting a lot of the "fseventsd" SLOWDOWN errors.
May be related to backing up to a Network drive attached to my Time Capsule as often (although not always), I can tell that the crash occurred during a TM backup because the TM icon just spins without making any progress beyond what was done at the point of the Finder crash.
This is happening every few days (sometimes daily) and I'm having to do a hard restart every time. Getting REALLY tired of it. Not sure if it's an issue with this particular mac (my Mac Mini) because I rarely ever see the issue on my Macbook (which backs up directly to the TC) or if it's an issue with the Time Capsule itself.
I have noticed that my Time Capsule sometimes loses access to the air disks and printer attached to it and the only solution is a restart.>>>
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Here's the one that describes my temporary workaround (it worked just now, I'll continue trying this each time the error occurs.
<<<Just tried something to see if it would be a work-around to the hard restart. Since I'm also having the TC issues, I tried restarting the TC first. After restarting the TC, the Mac Mini Finder/System Preferences were no longer "hung" and everything was accessible!
So for now, whenever I have the "Finder not responding" or Finder error 10810, I'm going to just try using Airport Utility to restart the Time Capsule. Not the perfect "solution", but if it saves me having to do a Hard Restart and reboot to open all of my apps, it's definitely preferrable.
I'd be interested to know if this work-around works for anyone else. >>>