I was looking at an assembly this morning. It had two components. I was measuring some edges. At some point the following happened: 1. The key board input was ignored 2. Some mouse input was ignored 3. Many toolbar buttons, menu items, etc were greyed out. 4. No dialog boxes were open at the time. 5. The X in the upper right of the window would not shut SW down. It had to be killed from the task manager. SW2004 SP3.1 AMD64 FX53 XP Pro FX3000