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

Firefox has started using up my available memory significantly slowing other open programs.

  • 2 replies
  • 18 have this problem
  • 1 view
  • Last reply by cor-el

more options

When I am doing research or writing I have Firefox open with multiple tabs running as well as Microsoft Office applications. Within a short period of time, the entire computer slows down. System processes show 100% of CPU used with Firefox eating up about 80%. When I close Firefox and then disable that process, all other programs and computer speed return to normal. I'm only using 1/3 of the available memory. I use Windows 7 and have 3g of physical memory.

When I am doing research or writing I have Firefox open with multiple tabs running as well as Microsoft Office applications. Within a short period of time, the entire computer slows down. System processes show 100% of CPU used with Firefox eating up about 80%. When I close Firefox and then disable that process, all other programs and computer speed return to normal. I'm only using 1/3 of the available memory. I use Windows 7 and have 3g of physical memory.

All Replies (2)

more options

yeah, it's only been lately.. i'm running win7 with 4gb memory and FF has recently been eating up alot of it.

more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See: