Running 2 different versions of Firefox
For the bored... really. Those who wants to use FF2 and wants FF3
for testing, you will definitely need more than one profile,
otherwise, it will start crashing.
1. Close all Firefox windows.
2. Click on Start > Run. Copy and paste the
following in: firefox.exe -ProfileManager
3. A new window will open. Click on Create
Profile. Follow through and you're done. Remember your
profile name, because you need it.
4. Start your Firefox this way:
a. Click on Start > Run.
b. Type in the following: path to your Firefox -P
Profile_Name -no-remote and press Enter. You should be
prompted to select a profile, select the one you want and start
it.
Path to your Firefox - By default, it's in C:\Program Files\Mozilla
Firefox\firefox.exe
Profile_Name - if you want to start the default, it will be named
default. Otherwise, it's the one you created earlier.
Here's mine, running both Beta and stable versions:
