I was getting out of disk space messages, but I had had tons of space before I installed Knoppix just a few weeks ago. It's a 40g drive which while just running Windows was only using about a fourth of available space. I checked with qtparted and it does appear I am way low on unused space. Makes me wonder if doing "apt-get updates" adds a lot of files to my hard drive. Strangely, even my Windows NTFS partition showed it was low on unused space. Has anyone experienced this sort of problem?