Re: 0 byte left on device
the big file isn't gone. look here:
4,0K hybrid-gfx.log.6.gz 4,0K hybrid-gfx.log.7.gz 104M lightdm.log.1.gz 96M lightdm.log.2.gz 60K lightdm.log.3.gz 52K lightdm.log.4.gz 52K lightdm.log.5.gz 48K lightdm.log.6.gz 12K lightdm.log.7.gz 4,0K modemmanager.log.1.gz
as you see the size - there is a run-away logging - the file was rotated and ziped.
have a look at the contens of the logfile to see whats make lightdm so confused.
"What is the robbing of a bank compared to the FOUNDING of a bank?" Berthold Brecht