KERNAL PANIC ERROR TRANSLATION, PLEASE?

Question

I've been suffering from frequent crashes on this power mac g4 for years now, even back when we had 9 on it. The only alterations of hardware that have been made since we bought it, was an additional 160gb internal harddrive. Other than that, nothing has been touched. This is a work computer. I shouldn't even have to be dealing with this. It should be taken care of by my company. but they're cheap as ****. so this is my last resort. can anyone PLEASE help me translate this panic log (actually there are two):
Thu Dec 1 15:01:05 2005
Unresolved kernel trap(cpu 0): 0x400 - Inst access DAR=0x000000001C0CC004 PC=0x0000000000000000
Latest crash info for cpu 0:
Exception state (sv=0x323A4280)
PC=0x00000000; MSR=0x40009030; DAR=0x1C0CC004; DSISR=0x40000000; LR=0x00000000; R1=0x11ECBE90; XCP=0x00000010 (0x400 - Inst access)
Backtrace:
0x00091860
Proceeding back via exception chain:
Exception state (sv=0x323A4280)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x32C50C80)
PC=0x900078B8; MSR=0x0200F030; DAR=0xBFFF4DB0; DSISR=0x42000000; LR=0x90007438; R1=0xBFFF8B10; XCP=0x00000030 (0xC00 - System call)
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): 0x400 - Inst access
Latest stack backtrace for cpu 0:
Backtrace:
0x00083498 0x0008397C 0x0001EDA4 0x00090C38 0x0009402C
Proceeding back via exception chain:
Exception state (sv=0x323A4280)
PC=0x00000000; MSR=0x40009030; DAR=0x1C0CC004; DSISR=0x40000000; LR=0x00000000; R1=0x11ECBE90; XCP=0x00000010 (0x400 - Inst access)
Backtrace:
0x00091860
Exception state (sv=0x32C50C80)
PC=0x900078B8; MSR=0x0200F030; DAR=0xBFFF4DB0; DSISR=0x42000000; LR=0x90007438; R1=0xBFFF8B10; XCP=0x00000030 (0xC00 - System call)
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
Fri Dec 2 13:50:17 2005
panic(cpu 0): vmpageinsert
Latest stack backtrace for cpu 0:
Backtrace:
0x00083498 0x0008397C 0x0001EDA4 0x00071C10 0x00072720 0x00059170 0x00091074 0x0009402C
Proceeding back via exception chain:
Exception state (sv=0x3236D280)
PC=0x936CAB58; MSR=0x0200F030; DAR=0x0CF86000; DSISR=0x42000000; LR=0x936BA4FC; R1=0xBFFFC370; XCP=0x0000000C (0x300 - Data access)
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

Answer 1

Since it does not appear to be specific as to any peripheral bus this is some sort of data access error. Those can be hard drive or RAM related. If you are running any sort of disk utility on the machine, you should make sure first of all that it definitely is 10.3.9 compatible. You may also want to verify that the directory is in good shape following these instructions:
http://www.info.apple.com/kbnum/n106214
If it is, I'd start to focus on possible hardware issues assuming the drive is nowhere near full and no third party utility software has been used to fix the drive.
If it isn't, and isn't able to be fixed by the above instructions, backup your data, and get Alsoft Disk Warrior 3.0.3.
Check also that the drive's jumper settings are correct for the cable position they are in. The jumper settings are usually on the sticky label of the drive.
If everything checks there and kernel panics persist, then I'd look at possibly replacing the RAM. Note, doing this yourself, if you don't know how may cause static electricity to damage the machine. An authorized service center may be a better option if you don't feel comfortable doing it yourself.