Hi, While testing 2.6.24.2-3.fc8 on F8 I found many messages like this: ALSA sound/pci/hda/hda_intel.c:1259: azx_pcm_prepare: bufsize=0x4400, fragsize=0x1100, format=0x11 ALSA sound/pci/hda/hda_codec.c:682: hda_codec_setup_stream: NID=0x7, stream=0x5, channel=0, format=0x11 ALSA sound/pci/hda/hda_codec.c:682: hda_codec_setup_stream: NID=0x3, stream=0x5, channel=0, format=0x11 ALSA sound/pci/hda/hda_codec.c:682: hda_codec_setup_stream: NID=0x3, stream=0x0, channel=0, format=0x0 ALSA sound/pci/hda/hda_codec.c:682: hda_codec_setup_stream: NID=0x7, stream=0x0, channel=0, format=0x0 ALSA sound/pci/hda/hda_codec.c:682: hda_codec_setup_stream: NID=0x3, stream=0x0, channel=0, format=0x0 (each time someone opens/closes the sound device). While searching for the cause it turned out that this are just debug messages triggered by CONFIG_SND_DEBUG_DETECT being set. Please unset this for non debug kernels. (I am also not sure if we want this on debug kernels, because its very noisy).