I continually get greeted with the “restore last session” pop-up when I start firefox. I find it really annoying especially as I use Google Browser sync to do exactly the same thing, so I have to deal with two restore messages. I have followed the following link and turned off the session restore feature in firefox.
1. type about:config in your browser URL
2. go to the browser.sessionstore.enabled setting
3. change the setting to false
fgibson.com 
#1 by Dotan on March 20, 2007 - 12:34 pm
… Or, open the Options dialog (Preferences on Linux, I think) and in the Main tab, the Startup group, chose something other then “show my windows and tabs from last time” when firefox starts.
Actually, it sounds like your browser keeps crashing. Or maybe you log out without closing it.
#2 by Phil Lord on March 27, 2007 - 10:31 pm
Thank God for that. You have no idea how long I have been trying to turn that off for.
Come to think of it, you probably no exactly how long…1 day after that new “feature” was released.
#3 by Ronin on September 21, 2007 - 11:47 am
Thanks soooo much, this has been driving me crazy! Session restore is finally off hurah!
#4 by Vinny on September 28, 2007 - 3:37 pm
Every time I start Firefox, it shows about 7 tabs and it does not ask me if I want to restore a session. The tabs are the same all the time, aol help pages. I have tried uninstalling and reinstalling several times. I have messed with the prefs and went from true to false. I’m done. It’s annoying and I’m ready to go back to Netscape. Can anyone help?
#5 by Ano on October 22, 2007 - 10:53 am
Thanks for showing us how to turn that feature off! Didn’t Firefox staff notice that some people might see it as a lack of privacy? I think it should be an option in Tool menu. Thank you!
#6 by Via on May 16, 2008 - 7:05 pm
Is there a way to get rid of this annoying Session Restore popup while making the default to *always* restore the previous session? Anyone?