No problems with Conversation Bubbles from 3/19 on.

Similar comment as to Jason P on 3/16. Bubble still opens and displays email as usual, but Archive and Trash functions no longer work (for the last 2-3 days). I'm using FF 1.5.0.1, and have the "http://persistent.info/greasemonkey/Gmail Conversation Preview: Not able to find a 'More Actions...' menu" message popup in my Javascript Console.