Firefox has CPU usage problem

Seems like this has been a problem for the last month or more, but I was pointing at every other possible cause rather than Firefox itself. Glad to see you post the article. In addition to memory leaks, I'm struggling with server timeout issues. I love Firefox, but I don't love the downtime.

I prefer Firefox with all the extensions, but I have been experiencing Firefox hogging resources. I removed all the extensions just to ensure that the memory issue was not caused by them and the issues persisted. I run a memory monitor just so I know when it is time to exit and restart Firefox. I am hoping that these issues are fixed in an upcoming update before I have to resort to another browser!

I too have noticed Firefox taking between 10 and 20% of a CPU on my dual code iMac - again for no reason. I run the activity monitor all of the time. I also have continuing problems with memory leaks and restarting Firefox doesn't solve that problem entirely but perhaps it's not all Firefox doing that.

Well, I meant dual core, not dual code. Also, the time stamp on my comment says 2:02PM. Where are you folks, out in the Atlantic somewhere? It was 13:02 here in NC.

Well, it happens to me too. Specially during the startup. I can see on Kima app(my resource monitoring in Linux), that my CPU's being used up to almost 99%, only by firefox!

@Claire,
I dunno where these folks are, but you were only an hour different, so you might be able to guest where they are :)

It is the same issue for me. First of all, I just loved Firefox for being such a great replacement for IE. But now I use Opera because it is faster and uses less resources. Sometimes Firefox just blocks the entire system and I am forced to shut it from the tasks manager (where it shows greater values for the use of processor, something near 100 percent just for Firefox).

Yep, Firefox continues to consume more and more resources on my PC's. I can tell when its time to reset Firefox when things start to slow down. Or Firefox crashes --- which REALLY is not a big deal because Firefox remembers exactly where I was and allows me to restart or event to "uncheck" tabs that might have been causing issues.

Is it a big deal to me? No. It's just something I watch for. The irony is ... if this was an IE problem people would be up in arms. I use Firefox as my primary browswer, Chrome for Googlewave, and IE only rarely. I like them all --- each has their place. It's a comfort level with Firefox now that creates a barrier to exit. I'll stick with Firefox.

I am having serious problems with Firefox using a lot of CPU and completely freezing my computer.

I'm glad I could quickly find information about my problem. I have to do a hard shut down to get it to resolve. I was worried it was a virus but virus scan was clean and debugging showed me this problem only happens when I run FF.

I hope they fix this soon.

I have noticed Firefox does use a lot of my CPU, but I have found a different browser that runs the same Gecko as Firefox, uses the same applications, and is just as secure. It boots with less CPU/RAM usage on a cold boot than Firefox, it is called CometBird and it has a few things that Firefox don't have: a built-in download accelerator, a built in translator program, and a few other nice touches. It also checks for the newest versions of a lot of different software that I have or that I might try.

yes, i also faced this problem, i have 1GB RAM n lot of times its Firefox which make me go in trouble with other programs, i love firefox but i gets frustrated sometimes bcz of its problem of consuming lot of recourse. Hope this will be resolved in upcoming versions