This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Denne tråden ble arkivert. Still et nytt spørsmål dersom du trenger hjelp.

After 1-2 hours of normal usage, Firefox 19 increase CPU usage up to 30%.

  • 2 svar
  • 5 har dette problemet
  • 2 views
  • Siste svar av cor-el

Ro84
Ro84
more options

Problem started 3-4 weeks ago. When I start Firefox, its CPU usage is normal and low. After some time, it starts to increase the usage of CPU, reaching 28%-32% of CPU percentage, Firefox become slower and I have to close and restart it. RAM usage is normal.

Note that this happen even if Firefox is open *without* using it. Just after a while Firefox increases its resource needings.

I tried to disable each addons, purged the cache, disable Java, also I tried to reinstall Firefox. Nothing seems to solve this issue.

Windows 7 64bit on i5 sandy bridge 2400GHz, 8 GB RAM.

Problem started 3-4 weeks ago. When I start Firefox, its CPU usage is normal and low. After some time, it starts to increase the usage of CPU, reaching 28%-32% of CPU percentage, Firefox become slower and I have to close and restart it. RAM usage is normal. Note that this happen even if Firefox is open *without* using it. Just after a while Firefox increases its resource needings. I tried to disable each addons, purged the cache, disable Java, also I tried to reinstall Firefox. Nothing seems to solve this issue. Windows 7 64bit on i5 sandy bridge 2400GHz, 8 GB RAM.

All Replies (2)

Ro84
Ro84 Eieren av spørsmålet
more options

Update: Just now I see there is a new version. I try to install it.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Is there a plugin-container process running when this happens?

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.