When using Firefox, Sometimes you found this type error in your system “Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart you system.”
Follow these steps for run Firefox without restart your system.
1.Click Ok, in close Firefox massage box.

2.Right click on task bar and then select Task Manager or type Ctrl +Shift +Esc.

3.Click on Processes Tab key in windows task manager window.
4.Search Firefox.exe, and then click on Firefox.exe.
5.After selecting firefox.exe, then click on End Process button.
6.(you found New confirmation massage ) then click End process.

7.Close windows task manager and start Firefox.

Note: you can use it with windows Vista & XP.

Tags: Browser, Firefox 3, Tips and Tricks