I suspect it will be more than a few days. Unstable has been
disrupted for weeks, and aptitude full-upgrade still shrugs and
says 'I can't do it, do you want to have a try?' There are more
than 150 packages stuck at the moment, on a system with just over
4000 installed.
Apt-get dist-upgrade wants to pull about seventy packages, but some
are libraries which will be replaced by new versions. Gimp and
gnome-mplayer are in the list, which I'm not willing to give up
yet. If I get bored, I might mess around with synaptic to see if I
can upgrade a few, but clearly there is still significant trouble.