Another Panic Report Translation Needed Please

Question

Even after updating to 10.4.8 and installing a new hard drive, I'm still having kernel panics. Previously I got a report that indicated something plugged into the computer was causing the kernel panics. So I unplugged everything other than the keyboard/mouse USB combo and the Epson C86 USB printer.
Last night it crashed again. Can anyone here please translate this panic log?
Thanks
Wed Feb 21 23:02:54 2007
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x0000000000000000 PC=0x00000000000AC864
Latest crash info for cpu 0:
Exception state (sv=0x3D198C80)
PC=0x000AC864; MSR=0x00009030; DAR=0x00000000; DSISR=0x40000000; LR=0x00067758; R1=0x2719BC20; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00067748 0x0006ABD4 0x0006B730 0x000578A0 0x0002921C 0x000233F8
0x000ABAAC 0x00000000
Proceeding back via exception chain:
Exception state (sv=0x3D198C80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x3DA9DA00)
PC=0x9000AB48; MSR=0x0200F030; DAR=0xE00FE000; DSISR=0x42000000; LR=0x9000AA9C; R1=0xBFFFB970; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 8.8.0: Fri Sep 8 17:18:57 PDT 2006; root:xnu-792.12.6.obj~1/RELEASE_PPC
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x00095138 0x00095650 0x00026898 0x000A7E04 0x000AB780
Proceeding back via exception chain:
Exception state (sv=0x3D198C80)
PC=0x000AC864; MSR=0x00009030; DAR=0x00000000; DSISR=0x40000000; LR=0x00067758; R1=0x2719BC20; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00067748 0x0006ABD4 0x0006B730 0x000578A0 0x0002921C 0x000233F8
0x000ABAAC 0x00000000
Exception state (sv=0x3DA9DA00)
PC=0x9000AB48; MSR=0x0200F030; DAR=0xE00FE000; DSISR=0x42000000; LR=0x9000AA9C; R1=0xBFFFB970; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 8.8.0: Fri Sep 8 17:18

Answer 1

I can't translate, sorry. If there's a USB problem, you'll usually see USB in the log somewhere.
Do you know exactly how the tech tested everything? The testing may not necessarily show bad memory if the tech used the Apple Hardware test CD. He may have used
http://www.memtestosx.org/
to run a thorough test. If so, it's pretty likely memory is not the problem, but I'd still consider swapping out chips if you haven't yet, and I'd also disconnect the printer just to be certain.
Putting in a new HD and reinstalling the OS, as I said before, points to some hardware problem. If it were me, and I paid someone to test it, I might get a little obnoxious with them or at least ask for a supervisor, although, if they didn't test it with the printer attached, well you get the idea.
good luck and post back if you figure anything out.