The Mac OS X IRC client Colloquy just got updated to version 2.4.
The new release is Lion-only and now supports fullscreen IRCing, has SASL support and the dock gets a badge when there are unread private messages and highlights.
The integrated “Colloquy Bouncer”, which provides bouncer capabilities to the mobile client counterpart, has had a memleak and a bug fixed that would prevent it from properly quitting.
The handling of netsplits has been improved and excess flood issues on freenode have been fixed. CPU and memory consumption has been reduced and Growl is now supported on 64bit platforms.
Are you using Colloquy on OS X? Tell us about your experience with it in the comments!
The full changelog and the download for Colloquy 2.4 can be found here.

Annoymous says:
I really disappointed in them just dropping snow leopard, with no announcement and the 2.4 beta 5351 works fine on Snow Leopard so I think they should at least make this lastest version for snow leopard and the next release can be lion only.