Help! G4 Kernel Panic

Question

Hi there!
I need help badly. My Mac have recently experienced Kernel Panics as many as 3 times a day. Its only started a few days back when i tried to burn a Video CD with Toast 7. Then it start "freeze" while surfing in Firefox. And also when i was recording and also playback tracks in Garageband3. I've checked the panic log, but i don't understand what it says. I hope someone can share a light on this matter. Here's the panic log:
Fri Jan 25 09:21:34 2008
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x0000000000000015 PC=0x000000000008BAA0
Latest crash info for cpu 0:
Exception state (sv=0x2F3FA780)
PC=0x0008BAA0; MSR=0x00009030; DAR=0x00000015; DSISR=0x40000000; LR=0x00085D78; R1=0x1C3A39B0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00037EB8 0x00093D30 0x00013B2C 0x0001B028 0x0001B0EC 0x00244B30 0x00244A08
Proceeding back via exception chain:
Exception state (sv=0x2F3FA780)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x2EFEB780)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
Kernel version:
Darwin Kernel Version 7.9.0:
Wed Mar 30 20:11:17 PST 2005; root:xnu/xnu-517.12.7.obj~1/RELEASE_PPC
panic(cpu 0): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x00083498 0x0008397C 0x0001EDA4 0x00090C38 0x0009402C
Proceeding back via exception chain:
Exception state (sv=0x2F3FA780)
PC=0x0008BAA0; MSR=0x00009030; DAR=0x00000015; DSISR=0x40000000; LR=0x00085D78; R1=0x1C3A39B0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00037EB8 0x00093D30 0x00013B2C 0x0001B028 0x0001B0EC 0x00244B30 0x00244A08
Exception state (sv=0x2EFEB780)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
Kernel version:
Darwin Kernel Version 7.9.0:
Wed Mar 30 20:11:17 PST 2005; root:xnu/xnu-517.12.7.obj~1/RELEASE_PPC
Please, if anyone knows what is happening, do let me know! Thanks!

Answer 1

Sorry guys, coz it took me nearly a month before updating the progress of my Sawtooth. A few days after reading the above, the Sawtooth refused to boot-up. And if it does, it will function for a while, then it will freeze, and refused to boot-up again. I've tried nearly everything suggested to remedy the problem, but still there's no luck. I "assumed" the Mac itself is dead so i dismantle everything and decided to save the harddisk, RAM and Sonnet processor for a replacement unit. So, for the next few weeks i've been using a PC/Win machine.
I managed to get my hands on another 2nd hand Sawtooth for less than a $100 a week earlier. Once i got it back home i put in the hardidsks and RAM into this Mac. I've updated the firmware and proceed to put in the Sonnet processor. But... the system refused to boot-up! And if it does, for a while (again!). I switched to its original Processor and it worked fine and stable. But when i replace it with the Sonnet, i have the exact same problem with the older machine! So the problem actually lies with the Sonnet upgrade processor!
I contacted the local distributor and he kindly checked the processor and mentioned it might have overheated (the 7455 chip). He will send it back to the US to get a replacement for me, and at the meantime, he loaned me an 1.8Ghz one (7447 chip?) to use for the moment. I really thank him for that!
What i learn is, try to test any replacement processor on a similar machine before concluding its the machine that failed. I'm lucky that i got another Sawtooth real cheap, and i'm selling off the parts separately. Hopefully, that can cover the cost of the replacement Sawtooth. (I sold off the PSU ysterday, so it will be soon!)