50 votes
Pause on idle
Allow for a task to be paused during periods of no activity. Allow this to be done manually (click a button in sidebar SlimTimer or Bubbles) or detect when a user's computer is idle for X minutes or detect their screensaver.
This will hopefully improve accuracy of time entries by helping to compensate for breaks when a SlimTimer user forgets to stop their timer.

0 MDCore
A possible problem with this one: I run slimtimer on my laptop while I work on my desktop. So my laptop is idle the majority of the time. If this suggestion was activated there would need to be a setting to disable it.
1 torbengb
Similar to MDCore's comment, I set my timer and go for a meeting -- the timer should not interpret this as idle.