The update site does not work for Mac OS X, so I have to install a new copy, reinstall all the addons, import preferences, altogether a couple of hours of downtime for each upgrade.
So today I tried exporting and importing launch configs as well, coming from 3.01, going into 3.10. The external launch configs make it in, but the run/debug launch configs don't make it . I use a lot of these and having to manually rebuild is a real PITA.