We have a lab full of Dell Latitude E6500 laptops running Windows 7 32-bit. We've been a experiencing a seemingly random issue where the Shift key gets "stuck." What I mean is that the Shift key is physically pressed but the computer is acting as if it is by displaying typed letters as uppercase instead of lowercase. Also, when someone presses a number key, the symbol above the number shows up as being typed: I.E. if someone types a 5 the percent sign appears instead. A reboot usually makes a temporary fix but if anyone knows how to permanently fix this issue, it would be greatly appreciated. Thank you in advance.