Intermittant issue with paperspace page outline being offset

I am now on version 11, but have had this problem with version 8 as well.  In a layout tab, I have one view located in the paper margins.  Then, at some point the paperspace outline will be offset from where it was originally located. It moves down an amount equal to the height of the paper. Once this starts, it happens in all the tabs.

Quitting Bricscad and then putting the computer to sleep is what is necessary to get things behaving normally. I only have used one computer over this time, so it may very well be isolated to this computer.  I am using Windows Vista Pro laptop with an AMT Turon X2 video chip.

Any idea about the trigger for this, and if there is a quick fix?

Joe Dunfee