Well, Mac OS X Tiger just crashed for me for the first time in about of month of heavy usage:

Yummy kernel traps and panics … to see what I sent Apple, click to read more ….

Unresolved kernel trap(cpu 0): 0×300 - Data access DAR=0×000000000000000C PC=0×000000000025BED8
Latest crash info for cpu 0:
Exception state (sv=0×27966C80)
PC=0×0025BED8; MSR=0×00009030; DAR=0×0000000C; DSISR=0×40000000; LR=0×001C8288; R1=0×122C3BB0; XCP=0×0000000C (0×300 - Data access)
Backtrace:
0×00000000 0×001C8288 0×001C6620 0×001C6978 0×0027BB40 0×0027B87C
0×002A8604 0×000ABCB0 0×00000000
Proceeding back via exception chain:
Exception state (sv=0×27966C80)
previously dumped as “Latest” state. skipping…
Exception state (sv=0×270DD780)
PC=0×900138AC; MSR=0×0000F030; DAR=0xE00FE000; DSISR=0×42000000; LR=0×90014A44; R1=0xBFFFF1B0; XCP=0×00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 8.1.0: Tue May 10 18:16:08 PDT 2005; root:xnu-792.1.5.obj~4/RELEASE_PPC
panic(cpu 0 caller 0xFFFF0003): 0×300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0×00095564 0×00095A7C 0×0002683C 0×000A819C 0×000ABB00
Proceeding back via exception chain:
Exception state (sv=0×27966C80)
PC=0×0025BED8; MSR=0×00009030; DAR=0×0000000C; DSISR=0×40000000; LR=0×001C8288; R1=0×122C3BB0; XCP=0×0000000C (0×300 - Data access)
Backtrace:
0×00000000 0×001C8288 0×001C6620 0×001C6978 0×0027BB40 0×0027B87C
0×002A8604 0×000ABCB0 0×00000000
Exception state (sv=0×270DD780)
PC=0×900138AC; MSR=0×0000F030; DAR=0xE00FE000; DSISR=0×42000000; LR=0×90014A44; R1=0xBFFFF1B0; XCP=0×00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 8.1.0: Tue May 10 18:16:08 PDT 2005; root:xnu-792.1.5.obj~4/RELEASE_PPCModel: PowerBook5,2, BootROM 4.7.1f1, 1 processors, PowerPC G4 (1.1), 1.25 GHz, 768 MB
Graphics: ATI Mobility Radeon 9600, ATY,RV350M10, AGP, 64 MB
Memory Module: SODIMM0/J25LOWER, 256 MB, DDR SDRAM, PC2700U-25330
Memory Module: SODIMM1/J25UPPER, 512 MB, DDR SDRAM, PC2700U-25330
AirPort: AirPort Extreme, 3.5f1 (3.50.37.p6)
Modem: LastDash, UCJ, V.92, 4.0, APPLE VERSION 2.6.4
Bluetooth: Version 1.6.0f2, 2 service, 0 devices, 1 incoming serial ports
Network Service: Built-in Ethernet, Ethernet, en0
Network Service: AirPort, AirPort, en1
PCI Card: TXN,PCIXXXX-00, cardbus, PC Card
Parallel ATA Device: MATSHITADVD-R UJ-816,
Parallel ATA Device: FUJITSU MHT2080AT, 74.53 GB
USB Device: Bluetooth HCI, , Up to 12 Mb/sec, 500 mA