I am using Stellarium 0.12.1 (Development). I have a laptop (Dell, latitude E4300) WIndows XP Pro SP3.
I start Stellarium and have it running in Full screen (or windowed F11 or Minimised) and I en- or disabled 'Set normal time rate [K]'.
Then I close the laptop; its goes into hibernation (I think that is the status called).
When I open the laptop, it asks for identification (and I only see a strip of the login screen). After inputting the password, I see the full screen of Stellarium. If I then do F11, Stellarium gets smaller. If I then minimise the Stellarium's window (although the minimise symbol it is visible...); the whole screen gets strips (see attachment) and the computer hangs, I need to press a long time the on/off button (Start and Task Manager do not work any more).
I can repeat this hanging using the above procedure.
I don't know if there are tools to determine in more detail the status when this happens...
Here is the login=screen after opening the laptop (so you see a strip only of the normal Windows XP Pro login screen)