update manager

[BoneKracker]

I'm assuming you don't recognize those.  They may be artifacts of
software you installed that is not part of the new distribution and for
which the upgrades would create a conflict.  



I don't know what the other two are, but I think "heimdal" is Kerberos
in its version 5.  I don't recall Kerberos being part of the standard
ubuntu install.



I believe part of the synaptic interface will show you what it is
tracking as "Local / Obsolete" packages.  I'd look in there and see if
removing some old package you manually installed gets rid of whatever
dependency is trying to pull those packages in.


-- 
BoneKracker