Kernel Panic report

My macbook ocassionally has a hard time booting up. It may take more than half an hour. I have got this panic log, but I can not figure out what causes startup delay. Configuration of the computer is included in the crash report.
any help is appreciated.
thanks
panic(cpu 1 caller 0x00191997): pmap_flush_tlbs() timeout pmap=0x4b3700 cpus_to_signal=0x1
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x13f539d8 : 0x128d0d (0x3cc65c 0x13f539fc 0x131f95 0x0)
0x13f53a18 : 0x191997 (0x3cf870 0x4b3700 0x1 0x0)
0x13f53a88 : 0x191ae0 (0x3159c 0x29dc8000 0x0 0x6)
0x13f53b08 : 0x193fc8 (0xfe94ee40 0xfe94ee48 0x0 0x19ae76)
0x13f53b58 : 0x16550c (0x4b3700 0x29dc8000 0x0 0x29dc9000)
0x13f53c48 : 0x165cc0 (0x29dc9000 0x0 0x1 0x0)
0x13f53c88 : 0x162fcf (0x144af3c 0x29dc8000 0x0 0x29dc9000)
0x13f53cb8 : 0x3c503c (0x144af3c 0x29dc8000 0x1000 0x0)
0x13f53cd8 : 0x3bf414 (0x3cc0300 0x0 0x1 0x3c66e9)
0x13f53cf8 : 0x3bf4e3 (0x3cc0300 0x0 0x2cb30c0 0x41)
0x13f53d18 : 0x3b503c (0x3cc0300 0x29dc8000 0x0 0x41)
0x13f53d78 : 0x1894c8 (0x27c3200 0x3130bbc 0x3f74eb4 0x3f74ec8)
0x13f53db8 : 0x12b4ee (0x3130b94 0x3f74e98 0x0 0x0)
0x13f53df8 : 0x124b17 (0x3130b00 0x0 0x38 0x13f53edc)
0x13f53f08 : 0x195f2e (0x13f53f44 0x0 0x0 0x0)
0x13f53fc8 : 0x19b81e (0x2d1cd80 0x1 0x19e0b5 0x2c72530) Backtrace continues...

Kernel version:
Darwin Kernel Version 8.11.1: Wed Oct 10 18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386

Model: MacBook2,1, BootROM MB21.00A5.B07, 2 processors, Intel Core 2 Duo, 2.16 GHz, 1 GB
Graphics: Intel GMA 950, GMA 950, Built-In, spdisplays_integrated_vram
Memory Module: BANK 0/DIMM0, 512 MB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 512 MB, DDR2 SDRAM, 667 MHz
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x87), 1.4.4
Bluetooth: Version 1.9.5f4, 2 service, 1 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST9160821AS, 149.05 GB
Parallel ATA Device: MATSHITADVD-R UJ-857E
USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA
USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA
USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500 mA

My guess is that you have a hard drive that may be dying. Boot your machine with the original install DVD and do a FSCK. Do that by selecting the top menu, Utilities, Disk Utility, First Aid tab, then select verify and repair the hard drive.

If you get a whole bunch of errors or it refuses to run the verify and repair, then it's likely you need a new hard drive. In any event you need to start backing up your data.

nothert ended

thanks. I checked the hard drive a couple weeks back, looks like it is in good running condition. will try again...

chscag said:

My guess is that you have a hard drive that may be dying. Boot your machine with the original install DVD and do a FSCK. Do that by selecting the top menu, Utilities, Disk Utility, First Aid tab, then select verify and repair the hard drive.

If you get a whole bunch of errors or it refuses to run the verify and repair, then it's likely you need a new hard drive. In any event you need to start backing up your data.

Click to expand...