When I was traveling from San Fransico to L.A. my somputer (sombrero) (COMPUTER) just crashed....
I was using flyaway in flight and I was enjoying the FSPassengers demo.
You haven't provided enough information to provide an answer.
Could be overheating...
Like Crash said, provide more details, and you'll get more specific help.
Where you using the add-on browser utility. If so, this is exactly what happened to me, it doesn't like pop-ups
what more info what i need to give?
And also if you have add something new to your system.
If its was the first time forgive your system and continue...If it continues happening then you have a problem.