I've got a problem that is really getting on my nerves now and I have no idea what is causing it. Basically I will have switched on my MBP with around 2-3GB of HDD space free, and after working on it for around 2-3 hours with applications that shouldn't demand any space whatsoever (Firefox, Safari, Preview), I get that little OS X error that tells me I have limited space left. As I mentioned before I have no idea why this is happening. Has anyone experienced anything similar, as I'm desperate for a solution. I can't keep deleting important personal files every few hours in order to keep the system running. help!