When I click on files in the file application the computer completely freezes. Anything to do with download files or system files, anything it just freezes. I'm not sure what it is called in ubuntu but if I was in windows it's every time I go into the windows explorer. I have made sure everything is up to date and checked my system log via the kernel (can't do it via files as crashes) but nothing has come up. It's ubuntu 13.10 i7 2600k 8gb DDR3 at 1300mhz 2.0 tb hdd with a nvidia GeForce gtx 590. The hdd light doesn't flash when it crashes and no fans ramp up so no more strain is put on the machine.
Edit it's the same with anything that runs of ubuntu except Firefox and the terminal. For example going into the software centre will cause a complete freeze