One thing you may want to try is deleting your cookies for that site.
In FF go to Options-Privacy-Remove individual cookies, then type in the first few letters of the domain (URL) in to the filter of the resulting pop up, and Remove either the selected (after highlighting) or 'Remove all shown' (if you've filtered them down good)
You'll have to log in again as a result but it may work.

Next level is deleting the history for a given time period (same Options path) .. not preferable as you may lose all stored credentials/shortcuts for the selected time frame.

Other than that, I got nothing.




Make your sound your own!
.. I do not work here, but the benefits are still awesome