I am a computer tech that has a customer that has a new Dell Precision T5500 workstation with a dual monitor nVidia Quadro NVS 295 video card running 2 monitors and then we have a Startech USB2VGA USB Video dongle that runs the 3rd monitor. Everything is working correctly however the customer occassionally is working within a window when the window switches to another monitor. It's not very consistent and it sometimes occurs when they are using a Windows RDP session to a terminal server. I have tried updating to the latest nVidia driver and tried updating the USB video card dongle driver, but it still happens, just not as frequently. I do use a 3rd party program for manipulating the multiple monitor interface called Ultramon, but I have removed that program and determined that this program is NOT causing the problem.
Any ideas would be appreciated in advance, my next step is to install another nVidia Quadro NVS 295 video card to give the customer 4 monitors, but I really do like these startech USB video dongles and they do support 1080p resolution.
Shawn - email@example.com