[LAU] Pardus user Pops and clicks problem

Hi there, I'm new to Linux Audio Users mailing list. I'm a Pardus (a Turkish distro) user and i'm trying to get rid of Cubase Protools etc. For a long time i downloaded and setup most of the audio packages and i'm using them for a while. My audio Card is an M-Audio 24/96 and it works fine. There's no latency etc. But i hear too much Pops and clicks when using soft synths. Especially when doing something else like dragging windows or other things. This problem is same for Ardour. Any action i do,(like dragging something, moving mouse) affects the sound processing. Too much Pops and clicks. I set my buffer to 512 samples and my hardware is strong enough. Any ideas ? Or previous threads about this ? -- Arda EDEN Cumhuriyet University Faculty of Fine Arts Department of Music Technology