Is this normal?

[Farabi]

My laptop not used to be being used at maximum, it used beeing used at 50% at max. Sometime used 100% for a few hours if I rendered a picture using blender. I used to not updating my OS since it sometime making the configuration weird, and I have no time to reconfigure it, after I reinstall the new AVG the autoupdate is on it is updated. Now, my laptop using full power everytime I used Firefox, but it did not getting faster, I bet some plugin is wasted out the resource. And the bad thing is, I cannot fix it. Not, every 15 minutes if it on 100% CPU usage, my laptop shutdowned. Anyone know how to limiting firefox CPU usage? It did not happen if I use Google Browsers one. All of my password was stored on firefox database, if I use google I need to retype everything. Im too lazy to do that.  :toothy

[dedndave]

i dunno - i think i would go back to an older version of firefox

but, i'd also get rid of AVG and turn off all automatic updates   :P

[clive]

Firefox is notoriously bad for leaking resources, this is compounded by certain web sites and scripts/flash. FF 6 and 7 seem to be a bit more stable.

As for laptops, they mostly default to low speed/power modes, you should be able to play with the power settings in Control Panel. Some of the cheaper laptops also utilize desktop class processors, and don't modulate/throttle speed properly. I'd check you have the most current BIOS, and that the BIOS has enabled the features you want.

[dedndave]

use google   :P

there seems to be a lot of info on the subject

http://www.google.com/#sclient=psy-ab&hl=en&source=hp&q=firefox+100%25+cpu+&pbx=1&oq=firefox+100%25+cpu+&aq=f&aqi=g3g-v1&aql=1&gs_sm=e&gs_upl=1940l7010l0l8045l17l16l0l1l1l0l303l2707l2.8.4.2l16l0&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=a4183349b9a276ea&biw=1019&bih=618

http://support.mozilla.com/en-US/questions/707979#answer-30122

http://kb.mozillazine.org/Firefox_hangs

[thesqueakycat]

 AV is a sham. Huerisitics may find part of a virus but reboot and it's back.
Signature updates don't work at all. Hex one byte and it's invisible to most AV software.

[AParsons]

I had a similar problem, so I went back to Firefox ver 3.6.23

In regards to CPU hogs try using process Explorer: http://technet.microsoft.com/en-gb/sysinternals/bb896653
View-> Set Colums -> Process Performance -> CPU History

It allows you to quickly see who is hogging the CPU.

Hope this helps

[Farabi]

Im fixed it, facebook plugin is the suspect, with newer flash. It did not compatible with Firefox 8.0. After firefox forcing autoudate without I even know it, they installed an antivirus kapersky, and automatically scan for virus. They found some virus, and it is a cracked software where I dont know how it could be there, maybe somebody used my laptop downloading it. Now everything is fixed, my system back to normal again.

[Farabi]

I had a similar problem, so I went back to Firefox ver 3.6.23

In regards to CPU hogs try using process Explorer: http://technet.microsoft.com/en-gb/sysinternals/bb896653
View-> Set Colums -> Process Performance -> CPU History

It allows you to quickly see who is hogging the CPU.

Hope this helps

Thanks :U Nice tools.