[achairapart]

Firefox 25 hanged most of the time, it seems was because of Firebug. I disabled Firebug.

Firefox 26 hangs at start up. CPU stuck at 100%. Almost 1 GB of ram used with 1 tab open (I can't even open a new one).

What happened, Mozilla?

I'm giving up with this browser.

[saidajigumi]

Anecdata: I use FF<current> heavily on a daily basis and haven't seen any of these problems. Issues of this magnitude are "set the internet on fire" problems. If a few web searches don't turn up tons of other users having these problems then it's best to assume there are local issues that need troubleshooting. Some suggestions on that:

1. Have you tried troubleshooting Firefox via Safe Mode? https://support.mozilla.org/en-US/kb/troubleshoot-firefox-is...

2. If troubleshooting via #1 doesn't help, consider using the Profile Manager[1] to create a new, blank profile and see if your problems reproduce there.

[1] https://developer.mozilla.org/en-US/docs/Profile_Manager

[achairapart]

I didn't want to be so negative but I'm actually frustrated with this. Because:

1. I used to be in love with Firefox. So much.

2. A few web searches turn up tons of other problems [1], maybe mine also. Maybe not.

3. At this point, this is not just a one shot problem to sort out. This is something mining my daily productivity.

[1] https://www.google.com/?q=firefox+hangs&safe=off

[nnethercote]

I call this "your experience is not universal" (YEINU).

[jdlshore]

Help --> Troubleshooting Information --> Reset Firefox

(if you can)

[skybrian]

Try it with a fresh profile to try to narrow it down.

[fzzzy]

File a bug