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

[Baho Utot]

On 08/08/2012 08:34 AM, 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.
>

You seem to be very fortunate lately.
What seems to be the common thread?