Firekeeper extension. If you got the problem, simple way is to remove this extension. You can also try to allow or put in the white-list the add-on mozilla site, I did not try this one (hmm…too complicated for me…!) 
Second thought:simply remove it.
Hi gdiloren,
No problems with Firekeeper on my Fx here, and GChrome for testing, but not as the default.
For copying all my Fx profiles I have Febe http://customsoftwareconsult.com/extensions/febe/febe.html
Febe compatible with Fx 3.0 and I have it enforced with Nightly Tester Tools on my:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b1pre) Gecko/20080905031348 Minefield/3.1b1pre ID:20080905031348
What I saw in Task Manager is that with GChrome I have got another version of GoogleUpdate.exe = GoogleInstaller and that is costing you CPU.
I will try out some -drag-resizer.js if it will work inside Chrome, so maybe you can do some Safari-like tweaking,
polonus
Polonus,
It’s weird, the Firekeeper extension was working fine until recently. Now it was even interfering with Comodo’s server and BoClean. Had to uninstall it. Will wait for a more stable version. Threatfire was removed 3 days ago but it wasn’t the culprit.
Thanks 
I’d bet you guys just drive your PCs crazy tryin all this stuff :
I have one just for testing, and I dont just try everything new on it… 
Acronis True Image 11 Home has Try&Decide. However, if you don’t have it, you can try Returnil Virtual System 2008 Personal Edition, which can dismiss all the change done to your System Partition while it is turned on. http://www.returnilvirtualsystem.com/index_files/rvspersonal.htm
As for Chrome, you can get new builds here.
http://build.chromium.org/buildbot/snapshots/chromium-rel-xp/
However, do you really think it worths your time?
Certainly not worth my time to be a beta tester for a product that I would say is just barely beta, perhaps alpha+ The day and a bit that it was on my system was enough. I will certainly wait for at least the RC version.
I do have Acronis ( 9 I think it is ) but never had much sucess with it 
I know it’s a top rated back-up program, I just never did get it to work right… OE I suppose… OE= Operator Error 
Also, it is so information-hungry that it cannot even wait for the users to finish typing.
lifehacker did a speed test among IE8 beta 2, Firefox 3.1 and Chrome.
http://lifehacker.com/5044668/beta-browser-speed-tests-which-is-fastest
I don’t think Chrome is extremely faster than the other two except its start-up.
Chrome may be good for Google but how much benefit is left for its users?
Acronis True Image is a good backup utility app but, here, I meant its Try& Decide function, which negates all changes during the session and is only available only with 11. Here is the trial version of Acronis True Image 11. http://www.acronis.com/homecomputing/download/trueimage/
If it works by any chace, you can choose to buy Acronis True Image 11 Home Upgrade. Alternatively, you can use free Returnil Virtual System 2008 Personal Edition, which works similarly to Try&Decide.