Yesterday evening I ran an update. Apparently the python3-update-manager got updated. However, since today I get an error message when I started the update manager within Unity. A report was sent as proposed. Running an update from within the terminal seems to work normally. Uninstalling and re-installing from the ubuntu software centre didn't solve the problem. I tried throughout synaptic where I removed all related packages (3) and re-installed them after a restart..but in vain so far. I'm quite new to linux and ran out of ideas. Anybody? $ update-manager& [1] 7761 $ Traceback (most recent call last): File "/usr/bin/update-manager", line 37, in <module> from UpdateManager.UpdateManager import UpdateManager File "/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py", line 55, in <module> from .UpdatesAvailable import UpdatesAvailable File "/usr/lib/python3/dist-packages/UpdateManager/UpdatesAvailable.py", line 62, in <module> from DistUpgrade.DistUpgradeCache import NotEnoughFreeSpaceError EOFError: EOF read where not expected