I run pulseaudio for days on end. It drives a house sound system, which plays music and radio to a cron schedule, even when I am away. I have a USB sound card and an internal pci sound device both driven via a combined sink. Every few days or so, the pulseaudio server dies with the one of following messages. Logging out-in restores the service. The problem is that I'd like to have it last at least 2-3 weeks. localhost pulseaudio[25023]: memblock.c: Assertion 'pa_atomic_load(&b->pool->stat.n_imported) > 0' failed at pulsecore/memblock.c:634, function memblock_replace_import(). Aborting. localhost pulseaudio[19753]: memblock.c: Assertion 'pa_atomic_load(&b->pool->stat.n_imported) > 0' failed at pulsecore/memblock.c:188, function stat_remove(). Aborting. I have only recently joined the mailing list and I have not seen any threads that deal with this particular problem. Any advice appreciated. Here are my my machine environment: uname -a Linux walden5 2.6.27.9-73.fc9.i686 #1 SMP Tue Dec 16 15:25:05 EST 2008 i686 i686 i386 GNU/Linux rpm -qa | grep pulseaudio pulseaudio-module-zeroconf-0.9.10-2.fc9.i386 pulseaudio-esound-compat-0.9.10-2.fc9.i386 pulseaudio-0.9.10-2.fc9.i386 alsa-plugins-pulseaudio-1.0.16-4.fc9.i386 pulseaudio-libs-zeroconf-0.9.10-2.fc9.i386 xine-lib-pulseaudio-1.1.16-1.fc9.1.i386 pulseaudio-core-libs-0.9.10-2.fc9.i386 pulseaudio-utils-0.9.10-2.fc9.i386 pulseaudio-libs-glib2-0.9.10-2.fc9.i386 pulseaudio-module-gconf-0.9.10-2.fc9.i386 pulseaudio-libs-0.9.10-2.fc9.i386 pulseaudio-module-x11-0.9.10-2.fc9.i386 lspci -v 00:0d.0 Multimedia audio controller: ESS Technology ES1983S Maestro-3i PCI Audio Accelerator Subsystem: Hewlett-Packard Company Unknown device 0010 Flags: bus master, medium devsel, latency 64, IRQ 5 I/O ports at 1400 [size=256] Memory at f4000000 (32-bit, non-prefetchable) [size=8K] Capabilities: [c0] Power Management version 2 Kernel driver in use: Maestro3 Kernel modules: snd-maestro3 lsusb -v Bus 001 Device 006: ID 0471:0110 Philips Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0471 Philips idProduct 0x0110 bcdDevice 4.02 iManufacturer 1 Philips iProduct 2 UAC3553B iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 187 bNumInterfaces 3 bConfigurationValue 1 iConfiguration 3 F5 2002/06/12 11:01 bmAttributes 0x80 (Bus Powered) MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 0 iInterface 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 43 bInCollection 1 baInterfaceNr( 0) 1 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 12 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 13 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 1 bSourceID 12 bControlSize 2 bmaControls( 0) 0x55 bmaControls( 0) 0x01 Mute Bass Treble Automatic Gain Bass Boost bmaControls( 1) 0x02 bmaControls( 1) 0x00 Volume bmaControls( 2) 0x02 bmaControls( 2) 0x00 Volume iFeature 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 20 wTerminalType 0x0301 Speaker bAssocTerminal 0 bSourceID 1 iTerminal 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 12 bDelay 0 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 1 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 6400 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0064 1x 100 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 2 Decoded PCM samples wLockDelay 1 Decoded PCM samples Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 12 bDelay 0 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 6400 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 2 Decoded PCM samples wLockDelay 1 Decoded PCM samples Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 No Subclass bInterfaceProtocol 0 None iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.00 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 41 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0002 1x 2 bytes bInterval 8 Device Status: 0x0000 (Bus Powered)