I don't know if it is related, but I have a custom setup of Eclipse 3.6 under Ubuntu 10.10 and sometimes the Eclipse menu bar disappears as well. However opening a contextual menu makes it reappear again. The same setup did not show this behavior under Ubuntu 10.04. Btw, as I mentioned above, I'm affected by this bug on Wammu as well.
I don't know if it is related, but I have a custom setup of Eclipse 3.6 under Ubuntu 10.10 and sometimes the Eclipse menu bar disappears as well. However opening a contextual menu makes it reappear again. The same setup did not show this behavior under Ubuntu 10.04. Btw, as I mentioned above, I'm affected by this bug on Wammu as well.