One of my Ubuntu boxes has a 160GB HDD which keeps running out of space. The reason I think this is an error or some program misbehaving is that if I reboot the box 2 times, it frees up 40-50GB of space. And it works great with all that free space for a few days or a week, then I start getting system messages again, saying I am running out of space. Another couple of reboots "fixes" this again.
If I go to Examine the drive, it shows me that most of the files are in my /home/<user> directory, but underneath that directory the Disk Usage Analyze shows nothing. It sounds strange, but it shows all these files in my /home/<user> directory, but underneath it shows all of my folders are barely used. I can provide a screenshot of this if needed.
I would guess that I have a program running somewhere that is doing this. I do have a Subsonic server running on this box 100% of the time. But how can I verify this? Is there a way to see where temp files or cached files are going, and to remove them without a reboot? Is there a way to verify if it is the Subsonic server app? I only mention this app because it is the only thing I have running 100% of the time.
Let me know what other info I need to provide.