Within the last couple of weeks, my CPU usage has been jumping from 35% to 60% while Firefox was running. When I closed it, the usage dropped to under 4%. I was running FF v3.6.2 and upgraded to 3.6.10 with no change to CPU usage. I haven't added any more extensions. Any idea why this is happening?
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional x64
CPU
AMD FX-8320 8-Core 3.50 Ghz
Motherboard
GIGABYTE GA-990FXA-UD3
Memory
16GB Corsair Vengeance
Graphics Card(s)
NVIDIA GeForce GTX660 2GB
Sound Card
NVIDIA HD 7.1 Channel ON-Board
Monitor(s) Displays
DELL ST2421L
Screen Resolution
192-x1080
Hard Drives
Corsair Force GS 128GB SSD
TOSHIBA DT01ACA200 2TB
PSU
EVGA SuperNOVA NEX750B 80 PLUS Bronz Modular
Case
Corsair Carbide Series 400R Mid-Tower
Cooling
Asetek 570LX Liquid Cooling w/240mm Radiator & Dual 120mm Fa
Firefox generally uses more resources as compared to other browsers. As said by the above member, try firefox in safe mode. To enter safe mode type: firefox -safe-mode in the Run box.
Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz (Gateway computer)
OS
Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz
Motherboard
Gateway IPISB-VR
Memory
8.00 GB
Graphics Card(s)
Intel(R) HD Graphics
Sound Card
(1) Realtek High Definition Audio (2) Intel(R) Display Aud
Monitor(s) Displays
ViewSonic 2250 Series
Screen Resolution
1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
(1) WDC WD10EADX-22TDHB0 (2) Generic Mini SD Reader USB Device (3) Generic USB CF Reader USB Device (4) Generic USB MS Reader USB Device (5) Generic USB SD Reader USB Device (6) Generic USB xD/SM Reader USB Device (7) Seagate FreeAgent Go
About a year ago I was having the same problem. I solved it that time by installing the FlashBlock extension. I have not installed any extensions for over a couple of months, so this is probably not due to an extension. I even noticed that when I click on a tab, it takes a 2 or 3 seconds before the tab opens.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional x64
CPU
AMD FX-8320 8-Core 3.50 Ghz
Motherboard
GIGABYTE GA-990FXA-UD3
Memory
16GB Corsair Vengeance
Graphics Card(s)
NVIDIA GeForce GTX660 2GB
Sound Card
NVIDIA HD 7.1 Channel ON-Board
Monitor(s) Displays
DELL ST2421L
Screen Resolution
192-x1080
Hard Drives
Corsair Force GS 128GB SSD
TOSHIBA DT01ACA200 2TB
PSU
EVGA SuperNOVA NEX750B 80 PLUS Bronz Modular
Case
Corsair Carbide Series 400R Mid-Tower
Cooling
Asetek 570LX Liquid Cooling w/240mm Radiator & Dual 120mm Fa
