[LAU] pops & clicks

Pops and clicks I was wondering if anyone on this list has any ideas what might be causing the pops and clicks I'm getting. I'm running Ubuntu Gutsy with realtime kernel, and using an M-Audio Firewire Solo audio interface. I'm creating audio by running quite a few amSynths through Seq24. There are actually two kinds of noise that I'm getting: the first is a click that happens with certain bass tracks, where the bass cuts out quite abruptly. I get a click with each note - needless to say it sounds awful. I can get rid of this by making the notes die off a little more gradually but obviously I'd rather not have to do this. I also get random pops and clicks, and sometimes the audio just cuts out for a moment. This _terrible_ since the clicks are sometimes much louder than the song I'm trying to play. If I used a big amp/speakers, I would blow them :-( Jack doesn't report any problems in the messages window. I can turn my latency down to around 2msec or up to 67msec or higher, but this seems to have no effects on the pops and clicks. No xruns are reported. -Katie