Firefox: Heat and the CPU Usage Problem

Firefox is still having problems with high CPU utilization that is causing some people, particularly laptop owners, to get hot under the collar.

This is documented on a Mozilla support page entitled "Firefox consumes a lot of CPU resources." The page states: "At times, Firefox may require significant CPU [central processing unit] resources in order to download, process, and display Web content." And forum postings like this one about a Dell Netbook are not uncommon: "Mini9 would get way too hot."

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