I've got a problem today where whenever I use the smart dimension tool it doesn't go away.  I can't hit escape to just have the selection arrow, and even manually turing off the dimension tool doesn't get rid of it.  It also doesn't highlight the features I'm trying to dimension, and doesn't show the dimension on the screen either.  It doesn't seem to make a difference if it's a brand new part/sketch, or modifying an old one.

I thought it was an error with SP1.0EV, but I uninstalled and reinstalled 2012SP0 and it's still doing it.  I didn't modify any settings that I know of, so I'm not sure what is going on.  Everything passes on SolidWorks Rx, so it shouldn't be a graphics card issue or anything.

any help with this issue would be greatly appreciated.