Install Firefox 18 is latest.

http://www.mozilla.org/en-US/firefox/all.html

Using a new clean profile in safe mode often fixes most problems as it is close to a clean install, and so if the machine has a suitable specification Firefox would be expected to work ok.

I can see tags and system information at the side of this thread, but as you appear to be freezing within 3 seconds I guess you are posting the message from another machine or another browser.

Regarding your problem machine can you please state:

• Operating System and Version
• Firefox version (Fx17 was recently replaced with Fx18 as the current Release)
• You mention crashes, so would you please check with about:crashes to see if you have any cash information, if so pleasepos a couple of recent Crash IDs
  • see Troubleshoot Firefox crashes (closing or quitting unexpectedly)
• do other browsers work ok on your problem machine ?
• you may already have seen Firefox hangs or is not responding - How to fix

Hi,

1) I tried Installing Firefox 18. The problem persists. 2) Since the problem occured, i have installed chrome, opera, safari and all of them work. I have so far not experienced any problems.

3) Here is the info you requested: Windows 7 Ultimate Service Pack 1 System type: 64 bit Firefox versions used: 17.1 18

4) Here is a more detailed description of the problem. After uninstalling firefox, i reinstall it using the 18.0 version. It installs without a problem. Once the installation is complete, a firefox window opens up and works. I can do anything i want. Once i quit firefox, every new instance i open freezes:

- Normal mode: Freezes when i click on the + sign for a new tab or click on the address bar or just wait a couple of seconds.
- Safe mode: I try and open it up in safe mode, a window appears asking me if i want to open it in safe mode or reset firefox.  If i click on reset firefox, the window disappears, a firefox process in open (task manager) but no window opens.
- Reset firefox.  If I try and reset firefox, the window asking me if i want to open it in safe mode or reset firefox.  Upon clicking reset firefox, a new window opens warning me that doing so will delete ... when i click ok, the window closes, however the original window asking me if i want to open it in safe mode or reset firefox freezes.

5) I never get an error message. Where are they kept so that i can attach them.

6) I installed the recommended "SUPERAntiSpyware Portable Scanner Personal Edition" and "Malwarebytes Anti-Malware users". I let those run through the night and removed some threats. This solved the problem after i restarted and reinstalled firefox. Hopefully this was the last time I have this problem again.

Problem fixed. Thanks for the support

Try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

A possible cause is security software (firewall,anti-virus) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

• https://support.mozilla.org/kb/Server+not+found
• https://support.mozilla.org/kb/Firewalls

I have the same problem, but I am using a Mac. I tried the fixes suggested in this post but nothing seems to fix it. I looked at the crash report and it says, "No crash reports have been submitted."

I have done it all to try to fix this problem....I have cleared all ad ons, reset Firefox and in desperation uninstalled and re-installed Firefox and nothing helps. All I can do is close Firefox and re open and that usually unfreezes it but then I lose all my retained windows and tabs from my previous session which I need to have. Chrome and IE work perfectly.

This never used to happen. I am on Firefox 21. Please, please fix this somebody.

I have the same problem...with my w7 x64 in some situation when I type.... firefox freeze and I need to restart the pc. with IE10,.... d't have this problem..

I will lock this thread as the original question was solved: apparently a malware problem.

• see also Troubleshoot Firefox issues caused by malware

Anyone else with problems please read the suggestions made in this thread, and if that does not help please start your own thread by using /questions/new

(Also remember at the current time Firefox 22 will be the up-to-date release)