Yeah...its been happening quite a bit here too.
(Wonder what kind of OS Todd is running the board software on).
These kinds of hick-ups can be caused by several things...OS and/or machine Memory are just two. Rebooting might help...or better would be to make an OS drive image of a 'fresh' install (separate from Board files data base storage area) and then restoring it fresh <as needed> which would wipe out accruing temp files etc.
I use this technique to re-do my machines the moment they act up...restoration requires only 5 minutes...and all is brand new again. Works great.