I'm not experienced at all with Ubuntu yet and I know there are lots of things I have to learn, but I'm kinda puzzled about this one.
I just got (suddenly after a reboot) a free disk space warning about only having 17MB of free disk space left. I know I don't have many things on my home folder - it's a fresh installation (installed Ubuntu 13.10 only about 2 months ago on my new SSD).
According to Disk Usage Analyzer there's a ~/.cache/upstart directory of size 46GB (out of 50.7GB dedicated to my /home folder). After searching there I realised it's the gnome-session.log
file being 46GB big.
I have no idea what is this - except from a few things I just read around googling it. I don't try things that I don't know how to handle on the specific machine because I don't want to risk harming it these days, so I don't really know what should I do now.
Is it possible that I did something wrong causing it ? Is it safe to just delete that /upstart folder to free some disk space, or that could cause me more problems. Should I do something else ?
Sorry if it's something common but I couldnt find anything clear and reliable to help me.
Thank you in advance.