Every time I open Sherlock I get an "unexpected error" which prevents me from searching. The error message tells me to restart if I keep encountering errors. Well, I have restarted and am continually experiencing these errors.
I had that problem, but they DID go away after restart... I thought it was because I was experiencing lots of weird 'computer been on too long' behaviour (screen redraws not happening properly, icons getting muddled up etc)