Here is Tekkub's write-up:
'Patch 2.4 introduced a bug where ChatFrame1 does not apply channel filters on login. This addon forces them to be applied. It will check your game version and build and not run after patch 2.4.1 build 8125. If the bug is not fixed in the next patch, a new version will be released."
A man of few words, but an active member of the WoW addon community nonetheless. He has his own site, as well as a collection on WoWInterface.com. I'm new to Tekkub's addons which are either aptly named or named with a unique, and borderline naughty, convention. However, this dev has been very proactive about his addons and responds quickly to changes in the game. Check out this addon if you've been struggling with the chat log and combat log changes since Patch 2.4. While you're at it, test drive some of Tekkub's other gadgets and let me know how they're treating you, as I'm in the process myself and would love to hear your opinion as well. Dismissed!