Outlook locks up while writing emails

I'm having a problem with my outlook refreshing and the cursor locking up while typing emails.I start typing and about 8 or 9 words into a sentence the curser stops moving and the pinwheel shows up on the screen, about 4 seconds later i can resume typing and then the cycle starts over again. i don't think this started happening until I upgraded to mountain lion.  I am running OX Mountain Lion 10.8 on a macbook pro that is 1 year old and have installed the 14.2.3 update for Office for Mac. I've checked my disc permissions and repaired. This is only happening on Outlook email.