I have a system that when working in ACA 2010 will occasionally start flickering between any open programs. Does not matter what command the user is doing, it will just start jumping from one open program to the next until it gets back to ACA. This never occurs when working in any other program just ACA. The system is a Windows 7 dual quad core 12 gig ram Dell Precision T7500 with a 1GB Nvidia FX 3800 graphics card. We have the current graphics card drivers.