Audio meters stop functioning during editing

Mr. Vegas Editor Man wrote on 12/12/2012, 2:55 PM
I have been using Vegas Pro 10 for the last two years and occasionally while editing, the VU meters will stop functioning. The audio playback is fine along with everything else, but none of the meters show anything (track or master meters). The only way I can get them to function again is to restart the software.
Any ideas? I am running on a Dell Precision T5500 workstation with 12G ram and dual Xeon processors stock sound card.