When running a timer sometimes i walk off for a cuppa :). Would it be possible that the timer pauses. Otherwise when I come back i have overlapping time.

When I leave my computer I always lock it. So could it be the following;
1. Timer is running
2. Computer locks which pauses timer
3. Return and unlock computer (I get prompted for away time :)
4. Timer continues for previous job or prompts if i wish to continue.