When I switch applications with [Alt+Tab], I don't see thunderbird as one of the options. Also, and I assume it's related, the Thunderbird icon in the unity bar isn't coloured and doesn't have the little triangle indicator that it is running, even though the inbox window is open.
What is going on here? Does thunderbird have some different status? Is it related to the integration with the notifications thingy in the top panel? Is there some setting I can change that makes thunderbird more visible (at the moment I have to use Compiz-Scale to see the Inbox window.
Any help/explanation appreciated. Thanks