Hi Jyri, I have applied the patch, but makes no effort to improve the performance, the CPU usage is still high :) I'm still confusing about this issue, there is no such problem in my PC, but its critical in my netbook. btw, the PA version on PC and netbook are both latest 0.9.21 release. Thanks, Liu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20100823/bdaa1777/attachment.htm>