Everytime I reboot my computer and lod firefox, I find that it has not saved my tabs from my last session. I have set Firefox to show tabs from last session and this doesn't help. curiously, i can close firefox and reopen it prior to rebooting and all is fin, it is only when the computer is restarted that everything seems to dissappear. I have veen tried removing all traces of firefox and re-installing but this didn't help.

I have done a scan with ad-aware, spybot and AVG and nothing has shown up.