random pauses in most applications

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https://bbs.archlinux.org – hi,Getting random pauses normally 2-3 seconds in length in most applications.  At first I thought it was releated to java, but noticed the pauses in Opera and kwrite.  They are frequent enough at least once every 10minutes and sometimes a lot more. I am running on a hp dv7 4120tx laptop, with ati hd 5650, and using ati catalyst 11.6 from the catalyst repo.When I thought it was java, i did find a post about java pauses, and they mentioned using  "export GDK_NATIVE_WINDOWS=true".  It made no difference.  Other posts spoke about broadcom drivers, but I am using (HowTos)