Re: can't update
If you trust the external repositories you have enabled, and you are not getting any errors from apt-get upgrade, just held packages, then you may need to run
to get any upgrades that are new package versions in the repositories, before you accept the dist-upgrade pay close attention as to what the command says it is going to do. If it is going to remove a whole bunch of things cancel, and post the output from the terminal here.
sudo apt-get dist-upgrade
Castles Made of Sand,
Fall in the Sea,