NASLite Network Attached Storage

This is my first post so I'm not sure how much info is needed to help me with my problem.

I have been using NASLite-2 USB successfully for about 6 months without incident. The box consists of 4 x 250 Gb IDE drives.

Yesterday, my Windows machine could not connect to any of the drives. I used Telnet to reboot NASLite. During the rebot process, Checking Storage Filesystem ( Disk-0) indicated Fail. The same happened for Disks 1,2 and 3. Nothing has changed with either the NAS box or my Windows between the time I was able to connect and failure to mount the drives.

I disconnected one of the discs and connected a CDROM drive. I used it to boot from a Knoppix CD to check if the disks were functional. I was able to mount the remaining 3 disks and play video files from each. The drives and the rest of the server functionality seems OK because I can boot to Linux.

I tried rebooting several times. Sometimes it would complete the boot sequence and leave me at the Login prompt. However, sometimes it would crash with the following error messages:

Unable to handle kernel paging request at virtual address e406e12c

Printing EIP
C012458
*pde=0000000

Oops: 0000
CPU: 0
eid: 0010 [c0124518>] not tainted
eflags: 00010807

(several lines of strings of letters and numbers)

code 8b 44 81 18 03 71 0c 89 41 14 40 75 1c 8b 41 04 8b 11 89 10
Segmentation Fault

HDD: drive_cmd
Status= 0x51 {DriveReady SeekCompleteError}

HDD: drive_cmd: Error 0x04 DriveStatusError



Or this error message ending in


Code: 8b 43 38 85 c0 8b 53 34 74 1e 2b 05 f0 00 47 c0 c1 f8 02 69

<0> Kernel panic: Aiee Killing interupt handler!
In interupt handler - not syncing



Can anyone shed any light on a direction to look?