[linux-audio-user] clicks without xruns

Hi everyone, I was just wondering if someone might be able to shed some light on a problem I have.. I sometimes notice audio clicks which are not picked up as xruns.. One particularly easy one to reproduce is using the dssi~ plugin for pd. If I send the dssi show message, play a note and then switch between workspaces, there is a noticable glitch in the sound.. This is probably best heard with whysynth and having the patch edit gui open (under edit in the dssi gui). I notice similar glitches at other times in other programs, although they are not usually too intrusive... Any ideas? I'm running a non-rt kernel although I am pretty happy with its performance (2.6.18).. I tried to roll my own rt kernel today but hit some networking problems which I have not had time to properly troubleshoot... Are there any reasonable precompiled rt images for debian/ubuntu available at present? Best wishes, James