[ubuntu-uk] Constant crashing

[Gareth France]

I recently installed Ubuntu on a friends computer as it was running 
painfully slowly with Windows. It is an older machine and the 
performance is now acceptable. However it appears that it is regularly 
hanging and requiring a forced reboot to cure this. When working on 
their broadband setup yesterday I witnessed this three times in a row, 
gave up and used my laptop instead. I have run the memory check that 
comes with Ubuntu and found no errors. I just wondered if anyone had any 
ideas how to track down the fault. Although slow Windows did not crash 
like this.