Earlier today I started a 7 pass erase free disk space through disk utility and about 2 hours in it said my startup disk is full. I had 126GB free earlier (out of a 148GB drive) when I started the 7 pass (it's still going on) but now if I get info on my HD it says zero kb free. I know I could download something like Grandperspective but when I try I just get an error saying there isn't enough space. Is this some sort of log file issue? Where are these big log files usually located? Any help would be greatly appreciated because the computer is practically unusable. I really want to avoid trying to do a new install (or archive and install) because it's a PITA. I can provide console.log info as well if it will help fix the issue.