Rated 4 out of 5 stars

Works great, accept for not logging in.

I found a temporary workaround: do not set any accounts to automatically log in. Wait around 2-3 minutes after Firefox started, then choose "Login all accounts" from the right-click menu. Works perfectly most of the times (I sent this as a customisable feature request on the preferences page, until a permanent fix can be found).

This review is for a previous version of the add-on (0.5.7.1).