Hi, this was annoying me long enough that I have decided to investigate. Basically, I am using skype-4.2 and pulseaudio-2.1 on fedora 18 x86_64. Whenever skype produces a sound event (incoming message bleep, logging in sound), buzzing noise will occur. This is especially prominent when playing a song in the background. I have looked at the log and the error message seems to be this: D: [alsa-sink] memblock.c: Pool full D: [alsa-sink] memblock.c: Pool full D: [alsa-sink] memblock.c: Pool full I have attached a full log. I know that PA 2.1 is really old now, but Fedora seems to be having hard time aligning with PA releases these days. Best regards, Julian -------------- next part -------------- A non-text attachment was scrubbed... Name: pa-skype.log.xz Type: application/x-xz Size: 15124 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20130523/b113ed9c/attachment.bin>