How starting an entirely new browsing session?

Answer 1

this is a very extreme version of that

safe mode will make it start blank (new session) every time +disable lots of garbage.

WindowsThis should not be confused with restarting the computer in Windows Safe Mode!

Use the "Mozilla Firefox (Safe Mode)", "Mozilla Thunderbird (Safe Mode)", or "Mozilla Thunderbird (No Extensions)" shortcut in the Mozilla Firefox or Mozilla Thunderbird program folder on the Windows Start Menu. If this shortcut is missing, you can start in Safe Mode by selecting "Start -> Run" (on Windows Vista, use "Start Search" or enable the Run box, as described here) and entering,

For Firefox, one of these:

• firefox -safe-mode
• "C:\Program Files\Mozilla Firefox\firefox.exe" -safe-mode

For Thunderbird, one of these:

• thunderbird -safe-mode
• "C:\Program Files\Mozilla Thunderbird\thunderbird.exe" -safe-mode

Adjust the path accordingly, if you installed your Mozilla program in a different location than shown above.

LinuxOn Linux, you can go to your Terminal and run (for Firefox):

• /path/to/firefox/firefox -safe-mode

Mac OS XOn Mac OS X, go to Utilities (in the Applications folder) and open Terminal, then run (for Firefox):

• /Applications/Firefox.app/Contents/MacOS/firefox-bin -safe-mode

And for Thunderbird, this is the line to run in Terminal:

• /Applications/Thunderbird.app/Contents/MacOS/thunderbird-bin -safe-mode

If you have installed the application to another location, modify the path as such. It's the "-safe-mode" command line parameter that's crucial here.