Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

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

  • 2 ŋuɖoɖowo
  • 5 masɔmasɔ sia le wosi
  • 2 views
  • Nuɖoɖo mlɔetɔ cor-el

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)

more options

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

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.