I'm having kernal panics even in single user mode

Question

My new Mac Pro has been having kernal panics left and right. I've done everything suggested here plus everything the Apple people have been telling me to do both on the phone and at the local Apple store. Nothing helps and the last call I made the Apple tech suggested I install a new hard drive which he is sending me. I also have his extension number so I can call him when the install is done. In the meantime while I'm waiting for the new hard drive I manage to reinstall the system after a couple of tries and just for grins boot into single user mode and let the computer sit for awhile. When I get back I find the computer has once again crashed and this one line stands out "simple lock deadlock detection". What this means I have no clue but I'm beginning to suspect what I have is a real lemon. If anyone has some insight they'ld like to share on this I'm open to suggestions.
P.S. And just to let you know I've done the following:
1. I've booted into safe boot mode and it crashes
2. I've booted off the install DVD and let it stand and it crashes
3. I've disconected everything but the mouse and keyboard and it crashes
4. I've reinstalled the system numerous times and it still crashes
5. I've taken it to the local Apple store where they replaced the memory and it still crashes
6. I've called the Apple help line and followed their suggestions which included unplugging the computer for 15 seconds to clear the SMU and it crashes even worse.
7. I've zapped the pram and reset the nvram and it still crashes
8. Even when I left it at the local Apple Store where they used their monitor, mouse, keyboard, and power cord it still crashes
9. It crashes on startup from time to time
10. And last but not least it crashes in single user mode even though I've done fsck -fy and then let it just sit
11. Oh yes and one more thing, the crashes are completely random and unpredictable.
Mac Pro duel core intel xeon 2.66mhz   Mac OS X (10.4.9)  

Answer 1

Well I finally resolved my issue, hopefully. Upon installing the new hard drive I had no problems for a week or so and decided to add a second drive and put my old system on it and see what would happen when I booted from the second drive. All went well for a week and then boom the crashes began again. I then switched back to the new drive with the fresh system and all went well for a little over a week when boom the panics returned. I called Apple and they made an appointment for me at the local Apple store. After looking at my files which included about 7 phone calls and several visits to the Apple store the best solution was a brand new Mac Pro. All this has been covered under warranty which is awesome. The only crashing I've had to date had to do with something called "mdimportserver" whatever that is. I also can only use one ethernet connector which is strange. I figured it might have to do with the new hard drive so I booted over to the old drive and everything is working fine except for the ethernet port which I haven't tried yet. I figure for now it's best to let that sleeping dog alone since everything else is working so good. When I'm sure this new Mac is working ok I'll wipe the new drive and use Super Duper to clone this system over rather than use Apple's migration assistant which evidently didn't do such a good job of migrating my system over. I'll let you all know how it goes several weeks from now hopefully.