Rated 5 out of 5 stars

Well indeed the download manager problem is fixed - still missing a close button in left panel, only keyboard'shortcuts to close it [ctrl+h] or [ctrl+b] http://bit.ly/YzRY1i

[edit] Well indeed you're totally right about the toggle button, so fifth star !

This review is for a previous version of the add-on (2.3). 

I didn't think it was necessary at the time because the toolbar button used to open it is a toggle button, you can click again to close the panel. Doesn't that work for you? I thought it would give a cleaner look to the panel. But if people think it should be there, I'll try to think of something, like show the button on hover. Thanks for the input, anyway.