I am running Ubuntu 10.04 on one 80GiB disk partitioned as two equal. The second one is mounted as my home folder. The reasons for the partitioning are historic and I don't think they're relevant here.
My problem is that Ubuntu frequently reports 'Low Disk Space'. The initial solution was to turn off backups and that seemed to ease the problem. Now it has started happening again, but backups are still turned off.
I can't see anything unusual in the tmp directory - or anywhere come to that - but I don't really know where to look.
I have searched for known leaky problems but haven't found anything that seems to fit.
I don't store images, videos or music.