What to Do When Firefox Stalls or Hangs

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I have encountered this problem off and on. Below a list of possible reasons for Firefox hangs:

Potential Sources for Firefox Hanging

  • HyperThreading
  • User Agent Switcher
  • JavaScript
  • MS Anti-Spyware
  • McAfee Antivirus
  • Adobe TypeManager/ Font
  • Extensions
    • Changes regularly as extensions are updated – post the extension you are having problems with below.

Some Solutions

The reasons for this problem vary but here are some troubleshooting tips to try when Firefox stalls or hangs to get you back up and running. My solution for the moment is to clear the cache, and reduce the memory load. I also had a problem with the Tabbrowser Extension (known also to conflict with FCKEditor and TinyMCE, among other things), which I replaced with TabMix Plus, and that seemed to solve the problem. Another extension that I think is great but unfortunately is experiencing extreme memory leaks is TagAlert. Hopefully a future release will solve the memory leak issues.

If All Else Fails

If all else fails reinstalling Firefox, disabling all extensions, and doing the following will almost always solve any issue:

Windows: Rename the “Firefox” folder in the following directory: C:\Documents and Settings\USERNAME\Application Data\Mozilla to something like “Firefox-bak” and reload Firefox. Post any questions below.

About The Author:

Alex has been involved on the business side of the internet since the early 2000's. He holds both a Management Science degree from the University of California at San Diego as well as a Computer Science degree from NJIT.

We Rock Your Web had its roots back in 2004 as the tech blog for a web design and development company Alex founded that has grown and evolved into the parent company of We Rock Your Web.

While his foundation is rooted in web development, his expertise today lies in content and digital marketing, SEO, organic and paid search, analytics, and publishing. Alex is an avid tennis player, nature enthusiast, and hiker, and enjoys spending time with his wife, friends, and dogs.

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