The Adium 1.0.1 beta is now available. This should fix most of the most commonly reported crashes with Adium 1.0.

If you downloaded Adium 1.0.1 beta 1 previously, you'll need to manually update to beta 2; beta 1 incorrectly reports itself to the version checker as 1.0.1 final, so it won't see beta 2 as an update.