Just a short note, quite some time ago some trunk changes broke ChatZilla. Accessibility also required some changes. All of these fixes have happened (thanks to dbaron for helping out with the layout fix) – but there has not yet been a release. Seeing as we’re getting close to 3.5, I thought I should note that those affected by these issues (say, people on 3.5b4) can download a nightly ChatZilla build here. New builds appear there after every (set of) change(s) in CVS. This should fix any compatibility issues. If it does not, please file a bug.
Edit: ChatZilla 0.9.85 (released some weeks ago…) has all these fixes, and will work fine with 3.5. Oops! 🙂