OS: Windows 7 - 64 bit on one and 32 bit on the other two... I have my settings on "Restore Windows and Tabs from Last Session"... When FF closes or crashes and I reopen, all too often my last session is NOT restored. When I check to see what's going on, the first thing I do is check that setting and, quite frequently it's changed to "open home page" or, more recently "show selected session manager"??? I have three PC's running - working together and they were all changed when I checked today. How does this happen? How can I stop this from happening? I want to ALWAYS restore last session.