The chat logs are hard to read. It may be a good idea to
* hide irc status messages by default
* use a table with the nicknames in the first column and the text in the second
I messed around a bit with regular expressions and Firebug to get the screenshot: http://img703.imageshack.us/img703/1806/bildschirmfotochatstend.png
Note: There is an issue with very long unbreakable chat lines causing the table to use to much space to the right, ending up below the navigation menu.