Firefox 支持论坛

I opened Private window in Firefox desktop browser for Mac, to login to gmail account. After few minutes of usage, I closed the Private window. When I opened a new Private window the 2nd time and open gmail.com, I could see I am not signed out of the gmail account. This is breach of privacy and highly unacceptable.

Why is my account still logged in, even while using Private window? What if I was using this in a public computer? Utterly scared now of my privacy and security in using Firefox.

I'd like to import my Seamonkey profile data to Firefox, but Firefox doesn't recognize Seamonkey or its data. How can I do this? I'd like to keep my Firefox data synced to Seamonkey, and maybe synced the other way too. And I'd like Thunderbird to be able to sync to the Seamonkey email data too, for what it's worth. I thought the importing of data when Firefox starts would take care of importing SM data but it doesn't. Are there any commandline options for running Firefox that would get the importing done? I sure don't want to mess around with a huge html bookmarks file and there's other data in Seamonkey besides bookmarks that should be imported too. Help!