Timers.. PLEASE HELP!

Question

Hey gang, I have an application which uses a System.Timers timer to do nothing more than change a lable by 1 second every 1 second. It just allws the user to keep track of how long they have been handling a particular task. The timer to update the label every 1 second works fine with one exception. When someone locks their workstation, the timer seems to stop counting after about 3 to 5 minutes. At least, when the user comes back from a lunch break after 1 hour, the label on the timer still says 5:00 or so, then once the system has been unlocked, the timer continues. Is there any way I can correct this behavior such that the timer will continue to update the label even when the system is locked? any assistance would be extremely appreciated. Thank you. Bob