My Pro 197 that I bought new in April 2010, just did that today, I looked at the display and thought "what the ????". turned it off and back on and it was ok again. My 197 has been running 24/7 since April 2010.
Jasper County Indiana Online News - "The online newspaper with the live police scanner streamed onto the internet." <link>http://www.jaspercountyinnews.com/</link>