Comment 10 for bug 538849

@Russell: No, it also happened when no mail was being sent. I'm using the past because I got rid of Evolution now (because of this bug, another one involving evolution to hang when a tiff is being previewed and the generally poor performance when handling large amounts of mails) and switched to Sylpheed - something I should've done a few years ago. It's incredible how much Sylpheed is faster - we're speaking operations taking place in the blink of an eye versus taking 10+ seconds like opening folders with tens of thousands of mails in it.

@Sebastien: As I uninstalled Evolution I can't provide backtraces but take a look at this bugreport, there's a workaround posted: https://bugzilla.gnome.org/show_bug.cgi?id=606902
and here are a few backtraces: https://bugzilla.gnome.org/show_bug.cgi?id=595421