Logged In: YES 
user_id=469548

I can confirm this using Firebird 0.6.1. It seems related to
these Mozilla issues:
http://bugzilla.mozilla.org/show_bug.cgi?id=77702,
http://bugzilla.mozilla.org/show_bug.cgi?id=148896. We could
probably fix this by keeping the otk and adding a "used"
property to it, letting clean_sessions() destroy the OTK's,
but this is really a Mozilla issue, isn't it?