One time after renstall firefox i lost my password... . they didnt sync. Today i lost my recent tab. Today i opened firefox and a saw a lot of tat without information that they were like blank page. I thought Firefox had crashed and I closed it and opened it again. And I saw Firefox open without any tab. In the history section, I followed the last Windows and tabs, but it was a one site, not all my tabs. What are you doing in Firefox? Damage to your User Information?