Adium released version 0.83 today. Ordinarily I'd attempt to summarize the release, but you can't really summarize it better than the post on their blog.

Besides. I've rather been itching to play with <blockquote> in my stylesheet, so now I can.

Evan at Adium wrote:

It's a recommended upgrade for all users, as it has many bug fixes and improvements as well as security fixes. The huge list of changes can be found in the version history. The executive summary is that after over 2 months of development past 0.82, this is the most stable version of Adium yet. Enjoy :)