In the past few weeks, everything worked perfect, even yesterday when I completed a flight! Until today... I was ready to start engines, but then the APU just went off, and by that I mean there was no light to say the APU was on (RUN), even though the switch was in the RUN position, I tried to flick it back to Start but to no avail.  This meant I couldn't start engines, and couldn't even change the Comm's in the Radio Panel. I use FS9 and Vista.

Anyone else having this problem? I know my friend is having this problem aswell, before I started with it.
And I know it says 'No Tech Support' but I am not looking for support, I just want to know if there are other people having the same problem.

Thanks!