Stuttery audio, pops and clicks since updating

ok, i've just updated to the itunes (7.0.2) and it's already giving me a headache.
Every time i'm playing audio i get lots of pops and cracks. I've noticed that if i look at my cpu usage chart the pops come along at exactly the same interval as i get cpu spikes. (about 50% cpu usage). I can't think what's going on.
All my drivers are up to date, direct x etc., and i've checked out that article that attempts to help you if you have crackley audio - nothing on it helps!
aaaaaaah, so annoyed!
please help someone!
Luke

Good news ladies and gents, i've had some success.
I tried reinstalling directX, but this didn't solve the issue.
However, i then entered the DirectX diagnostic utility just to check everything.
(if you go to Start->Run or press Win-R on your keyboard, and then type dxdiag it'll come up)
I noticed that under the sound tab, the acceleration level slider was set to 'None'. (IMPORTANT: this is a different control to the one found in windows audio settings) Having wacked the slider up to 'Full' and run the 'test Direct Sound' app and closed everything itunes plays without glitches.
I still however get large cpu spikes. Ii've got a reasonably fast computer so i shouldn't really. Get it sorted apple!
Luke

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Message Edited by Neillithan on 08-2-2009 04:32 [email protected]

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