Laptop randomly shuts down?

[boombrshot]

I have a sony vaio Vgn-Ns140D laptop running Ubuntu 11.10 64bit and I do not know why but it will often just randomly turn off, the battery is still almost fully charged, I really don't know why. Could anyone help me solve this problem?

Sorry I haven't really provided more information but I'm new to this.. just tell me what you need to know.

[latinlightning]

Is there a specific sequence of events that causes the random shutdowns? How often does it happen?

If you can, download System Profiler and Benchmark from the Ubuntu Software Center and check your CPU temperature under Sensors. It could be that your laptop is running hot hence the reason why the computer decides to shutdown before it gets any hotter.