My upgrade to Gusty Gibbon (Kubuntu) was a staggering failure to start with. First had some repository fetch failures (my fault for not tidying up Apt’s sources list). Then had a couple of errors extracting (or dl’ing… I forget now) some packages, followed by an error “Modifying software channels” which seemed unrecoverable (i.e. it would interminably hang at that point). Reboot, try again, same problem.

In the end I gave up and downloaded the upgrade CD, burnt it and tried with that, only to experience at least one of the problems again. All seemed lost until I specified -not- to download updates during the upgrade and everything seemed to work swimmingly after that.

Still. Hardly a stunning endorsement for the user-friendliness of Linux… but at least it worked in the end.