[arch-general] Something wrong with firefox/thunderbird driving X cpu usage -> 100%

[Sven-Hendrik Haase]

On 08/08/2012 02:34 PM, David C. Rankin wrote:
> Guys,
>
>   I have watched this in top for the past week or so. Thunderbird and
> Firefox are causing X cpu usage to shoot upt to between 80-100% on
> simple tasks like scrolling a message list in tbird or simply opening
> css menus in firefox. All of this used to be instantaneous and never
> cause the cpu to bat an eye. But now, it is very pronounced and brings
> the desktop to a crawl. This box is not a screamer, but plenty fast,
> P4 2800/4G/Nvidia 8600GT.
>
>   How do I determine what is causing this? X? ff/tb? something else? 
> Any ideas appreciated. Thanks.
>
Same here on a fairly recent machine with an Intel GPU. I use chromium
for web browsing and that is no problem at all there. However,
thunderbird really doesn't like my CPU.