I have another interesting issue in AutoCAD MEP 2009.

When working in 2D, I have my Ribbon set to "Minimize to Panel Titles" and I use 2 monitors.

My main monitor is AutoCAD Full Screen. My second monitor is for Properties, Tool Palettes, Design Center, Etc.

I have added 1 Custom Tool Panel in the Home Ribbon Tab

Occasionally if I click on the Tab for Tools, View, or Output, use a tool from one of those Panels and then click on the Tab for Home or Blocks & References I notice that the Panels run off the right side of the screen.

If I click on another Tab and then back on the Home Tab all the panels are back on the main screen. It also does this on the Blocks & References Tab which only has its standard Panels.

Any one see that one before?