Almost daily kernel panics...latest involves directory services as server and error logs created.  Error log just indicated improper shutdown, but server log indicates the following:

2011-08-14 07:59:51 EDT - T[0xA07AC820] - DirectoryService 5.8.1 (v514.28) starting up...

2011-08-14 07:59:52 EDT - T[0xF0185000] - Plugin <Cache>, Version <1.0>, processed successfully.

2011-08-14 07:59:52 EDT - T[0xF0185000] - Plugin <Configure>, Version <3.0>, processed successfully.

2011-08-14 07:59:52 EDT - T[0xF0185000] - Plugin <Local>, Version <1.1>, processed successfully.

2011-08-14 07:59:52 EDT - T[0xF0185000] - Plugin <LDAPv3>, Version <3.1>, processed successfully.

2011-08-14 07:59:52 EDT - T[0xF0185000] - Plugin <Search>, Version <3.1>, processed successfully.

2011-08-14 07:59:52 EDT - T[0xF0185000] - Plugin <BSD>, Version <2.0>, processed successfully.

2011-08-14 07:59:52 EDT - T[0xF030B000] - Registered node /Configure

2011-08-14 07:59:52 EDT - T[0xF030B000] - Plug-in Configure state is now active.

2011-08-14 07:59:52 EDT - T[0xF040F000] - Plug-in LDAPv3 state is now active.

2011-08-14 07:59:52 EDT - T[0xF0513000] - Registered Locally Hosted Node /BSD/local

2011-08-14 07:59:52 EDT - T[0xF0513000] - Registered node /BSD/local

2011-08-14 07:59:52 EDT - T[0xF0513000] - Plug-in BSD state is now active.

2011-08-14 07:59:52 EDT - T[0xF0491000] - Registered node /Search

2011-08-14 07:59:52 EDT - T[0xF0491000] - Registered node /Search/Contacts

2011-08-14 07:59:52 EDT - T[0xF0491000] - Registered node /Search/Network

2011-08-14 07:59:52 EDT - T[0xF0491000] - Plug-in Search state is now active.

2011-08-14 07:59:53 EDT - T[0xF038D000] - Registered Locally Hosted Node /Local/Default

2011-08-14 07:59:53 EDT - T[0xF038D000] - Registered node /Local/Default

2011-08-14 07:59:53 EDT - T[0xF038D000] - Plug-in Local state is now active.

2011-08-14 07:59:58 EDT - T[0xF0289000] - Registered node /Cache

2011-08-14 07:59:59 EDT - T[0xF0289000] - Plug-in Cache state is now active.

2011-08-14 07:59:59 EDT - T[0xF0185000] - Plugin "Active Directory", Version "1.6.5", is set to load lazily.

2011-08-14 07:59:59 EDT - T[0xF0185000] - Plugin "PasswordServer", Version "4.0.4", is set to load lazily.

2011-08-14 08:00:02 EDT - T[0xF0081000] - Network transition occurred.

2011-08-14 08:00:04 EDT - T[0xF0081000] - Network transition occurred.

2011-08-14 08:00:07 EDT - T[0xF0081000] - Network transition occurred.

2011-08-14 08:00:07 EDT - T[0xF0081000] - Network transition occurred.

2011-08-14 08:00:14 EDT - T[0xF0081000] - Network transition occurred.

2011-08-14 08:00:14 EDT - T[0xF0081000] - Network transition occurred.

Message was edited by: Bruce Barton Mac OS X 10.5.8, 1.8 GHz Power PC G5, 2 GB DDR SDRAM

Message was edited by: Bruce Barton PanicReporter indicates the following: Sun Aug 14 08:00:06 2011 Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x0000000000000010 PC=0x0000000000084060 Latest crash info for cpu 0: Exception state (sv=0x4499e500) PC=0x00084060; MSR=0x00009030; DAR=0x00000010; DSISR=0x40000000; LR=0x00084034; R1=0x3DD57AC0; XCP=0x0000000C (0x300 - Data access) Backtrace: 0x3DD57B10 0x000857A8 0x00078B04 0x0007916C 0x0007A1C4 0x0006C290 0x0006D2A4 0x0003BE4C 0x0029A010 0x0029A040 0x003100AC 0x000B4448 0x7D4ABA78 backtrace terminated - frame not mapped or invalid: 0xBFFFFC20 Proceeding back via exception chain: Exception state (sv=0x4499e500) previously dumped as "Latest" state. skipping... Exception state (sv=0x3de79500) PC=0x94D829FC; MSR=0x0000F030; DAR=0x001003E8; DSISR=0x40000000; LR=0x00001E70; R1=0xBFFFFC20; XCP=0x00000030 (0xC00 - System call) BSD process name corresponding to current thread: dirhelper Mac OS version: 9L31a Kernel version: Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_PPC System model name: PowerMac8,1 System uptime in nanoseconds: 62421796327 unloaded kexts: (none) loaded kexts: com.apple.filesystems.autofs 2.0.2 - last loaded 1117965927 com.apple.driver.AudioIPCDriver 1.0.6 com.apple.GeForcePPC 5.4.8 com.apple.driver.InternalModemSupport 2.4.0 com.apple.driver.MotorolaSM56K 1.3.9 com.apple.driver.AppleOnyxAudio 2.5.8f1 com.apple.driver.PowerMac8_1_ThermalProfile 3.4.0d0 com.apple.driver.AppleSEP 1.3.0 com.apple.driver.AppleTexasAudio 2.5.8f1 com.apple.driver.AppleTexas2Audio 2.5.8f1 com.apple.driver.AppleDACAAudio 2.5.8f1 com.apple.driver.AppleI2S 1.0.1f1 com.apple.driver.AppleLM7x 1.9d0 com.apple.driver.AppleSCCSerial 1.3.2 com.apple.driver.AppleUSBOpticalMouse 3.2.0 com.apple.driver.AppleHWSensor 1.9d0 com.apple.iokit.IOFireWireIP 1.7.7 com.apple.driver.AppleVSP 2.2.2 com.apple.driver.AppleK2Driver 1.7.2f1 com.apple.driver.AppleSMUMonitor 1.9d0 com.apple.AppleOnboardDisplay 1.15.1 com.apple.nvidia.nv30hal 5.4.8 com.apple.driver.ApplePulsar 1.5.2d0 com.apple.driver.AppleCPUThermo 2.0.0a0 com.apple.iokit.IOUSBMassStorageClass 2.0.8 com.apple.driver.AppleFileSystemDriver 1.1.0 com.apple.driver.AppleUSBMergeNub 3.5.2 com.apple.driver.iTunesPhoneDriver 1.0 com.apple.driver.LSI_FW_500 2.0.9 com.apple.driver.Oxford_Semi 2.0.9 com.apple.driver.initioFWBridge 2.0.9 com.apple.driver.IOFireWireSerialBusProtocolSansPhysicalUnit 2.0.9 com.apple.driver.StorageLynx 2.0.9 com.apple.driver.XsanFilter 2.7.91 com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.1.1 com.apple.iokit.SCSITaskUserClient 2.1.1 com.apple.iokit.IOATABlockStorage 2.0.6 com.apple.iokit.IOATAPIProtocolTransport 1.5.3 com.apple.driver.AppleUSBHub 3.4.9 com.apple.iokit.IOUSBUserClient 3.5.2 com.apple.driver.AppleK2SATA 1.0.4f2 com.apple.driver.AppleGPIO 1.3.0d0 com.apple.driver.MacIOGPIO 1.3.0d0 com.apple.driver.AppleFWOHCI 3.9.7 com.apple.driver.AppleKauaiATA 1.2.1f4 com.apple.driver.AppleMPIC 1.5.3 com.apple.driver.AppleI2C 4.0.0d2 com.apple.driver.AppleK2SATARoot 1.0.5b1 com.apple.driver.AppleUSBEHCI 3.4.6 com.apple.driver.AppleUSBOHCI 3.4.6 com.apple.driver.AppleK2 1.7.2f1 com.apple.iokit.AppleGMACEthernet 1.5.9f1 com.apple.driver.AppleSMU 1.2.1d1 com.apple.driver.AppleMacRiscPCI 3.4.0 com.apple.driver.AppleCore99NVRAM 1.1.1 com.apple.driver.AppleFlashNVRAM 1.0