kernel panic

anyone know what caused this


Wed Nov 21 16:02:44 2007
panic(cpu 0 caller 0x001A7BED): Kernel trap at 0x0013e6f6, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0x00000034, CR3: 0x01011000, CR4: 0x00000660
EAX: 0x0000001c, EBX: 0x9eefea42, ECX: 0x00514640, EDX: 0x00514640
CR2: 0x00000034, EBP: 0x3cdb3f08, ESI: 0x000000d1, EDI: 0x00274767
EFL: 0x00010087, EIP: 0x0013e6f6, CS: 0x00000008, DS: 0x004e0010
Error code: 0x00000000

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x3cdb3cf8 : 0x12b0e1 (0x455670 0x3cdb3d2c 0x133238 0x0)
0x3cdb3d48 : 0x1a7bed (0x45ea20 0x13e6f6 0xe 0x45e1d4)
0x3cdb3e28 : 0x19e517 (0x3cdb3e40 0x2603 0x3cdb3f08 0x13e6f6)
0x3cdb3e38 : 0x13e6f6 (0xe 0x3d90048 0x3cdb0010 0x1a0010)
0x3cdb3f08 : 0x35de71 (0x274767 0x3d96804 0x9eefea42 0xd1)
0x3cdb3f38 : 0x2747f2 (0x274767 0x3d96804 0x1771 0x3000006)
0x3cdb3f78 : 0x13e987 (0x3d96804 0x0 0x0 0xbffff120)
0x3cdb3fc8 : 0x19e2ec (0x0 0x0 0x10 0x0)
Backtrace terminated-invalid frame pointer 0

BSD process name corresponding to current thread: kernel_task

Mac OS version:
9B18

Kernel version:
Darwin Kernel Version 9.1.0: Wed Oct 31 17:46:22 PDT 2007; root:xnu-1228.0.2~1/RELEASE_I386
System model name: MacBook2,1 (Mac-F4208CA9)