Dying keybard? Or defective port?
Have you checked whether the board is plugged in correctly? Have you tried another port? (provided you have an USB-keyboard).
Edit: How about spyware (keyloggers), have you cleaned up your computer recently?
checked checked and checked, i run anti spyware scans everyday and nothing. everything seems to be running as it should and the problem only occurs when i use logon studio editor. and further when i try and choose a picture for the top and bottom panels i get an error and the editor closes, right after that the problem appears. It really has me stumped. from now on when i want to build a logon i will be closing everything else and concentrating on the job, then once i am finished i will reboot.
It happened to me several time long time ago, in my case its nothing to do with Logon Studio My Optical mouse, a real small hair got stuck on its Red LED lens everything turn to normal once remove
i thought that may be something to do with it as well mate, and i checked out my mouse. even went as far as to remove my optical and replace with a ball mouse, same problem occurs.
just want to thank everyone for the suggestions, thats why i love this site so much. people are always willing to think outside the box.