Could be a runaway log file...it's probably the most common culprit.
Use WhatSize, OmniDiskSweeper or Disk Inventory X to look for a large file or files.
What more do you need? I had like 15GB and then all of a sudden i had a couple MBs left. I didnt do anything to lose these GBs.
Can you explain what a runaway log file is?
Can you explain what a runaway log file is?
It seems that the problem comes from a folder inside the library folder called mirrors. Sound familiar to anyone?