Firefox keeps kaning my CPU every so often.

[TechnoCorruption]

This is a wierd one, I get it probably twice a month, Im running Firefox on my laptop and nothing else, usually the cpu usage sits at around 3% but on these wierd occasions it uses around 60-100% usuage on both cores and stays like it for ages.

I have checked the task manager and theres nothing else running, its saying all cpu usage is by Firefox, tried clearing my cache, stopping antivirus and done a virus scan / spyware scan.

Anyone got any suggestions, when its gets in this mood it just sorts itself out but it takes a while, the laptop spec is more than capable 1.73ghz Core Duo and 2gb ram and Vista Premium.

Edit: its worth pointing out as well its defantly using all the power and not a mistake by task manager, as when it does the laptop gets really unresponsive and it pumps heat out the air vents.

 

[TechnoCorruption]

Yeah you might be right, as soon as I posted this thread it stopped and returned to normal, so I guess it was like it for 25minutes in total.

I had 5 tabs open and nothing too strenuous, Yahoo Mail, Ebay, 2x OCUK and a search page, what browser do you use, im guessing IE is as cack as it always was