Firefox & CPU Usage/Heat

Ok so I've been using firefox. For a couple days I've been using the save and quit method so when I shut down my mac I don't lose my tabs. Today I noticed my heat got up to 165F. I checked my CPU usage and firefox was using like 50% of CPU at a constant while using 142mb of real memory. As soon as I closed firefox my temps went down.

I deleted firefox and am now using google chrome, it's using about 1% CPU and 60mb of real memory. my cpu us now at 108F while browsing.

Any ideas on why firefox would work my cpu so hard?

and does anyone know if 70-80C for a short period of time would do any damage or take life off of my cpu?

all in all. i owe a big **** you to firefox (excuse my french). it still baffles me on why and how a browser would work my baby so hard.

edit: using unibody macbook, and latest version of firefox (some of the tabs i had open used flash)

 

new unibody macbook, lastest version of firefox. and not sure i had about 5 tabs open. im pretty sure a couple of the tabs used flash..

either way..firefox taking 50%cpu??

 

yeah i found out that it was myspace with videos on the page. why do videos put a 50% load on my cpu? is that normal?

 

how come flash stresses the cpu so much? is this normal? some video sites were getting my cpu up to 75% thats with like 10-15% system but still...

 

the next version of osx or the next version of flash?

 

whens the update suposed to be?

 

ok thank you. how is the beta? is it any betta??

 

any of these for google chrome? and anyone have a link to the official adobe flash player beta?

 

i did i just wasent sure if i downloaded the right one. i downloaded 10.1 beta. but i saw some 10.37 and stuff like that so i wasent sure which one..

also is there a way for me to get the click for flash on google chrome?

 

what confuses me about the flash player is that before i download 10.1 beta 3 it tells me to uninstall any previous flash player. but when i uninistall my flash player and download the beta it says i need to download the latest flash player..

is the beta 3 just a plugin that goes over adobe flash 10?

 

how is your cpu usage when watching a flash video like youtube or something. with whatever adobe i have it's like 30-65% usually depending on the video. im using the new white unibody macbook, 2.26ghz proc, 4gb of ram, and a 7200 hd coming soon

 

that video is 50-60% cpu for me (including system/user usage)

weird. why is it using so much of my cpu? i have 2.26ghz proc and 4gb of ram. no other apps are open except itunes and google chrome. the system and everything else is taking about 10% cpu usage. and the video is taking 40-50%

how can i fix this. or is there something wrong w my computer?