Fedora :: Random Crashes & Freezes Copying From NTFS?

I am in the process of trying to move my files from a windows 2003 install over to fedora 12 using the Fedora 12 x86_64 Live image.

After some initial problems with burning the ISO image (had to enable disk-at-once to get rid of I/O buffer errors). And a GPF in the xor_sse2 module while building my software raid 5 arrays (forced to reboot, unable to stop or restart the array) I finally managed to create a single LVM volume group ontop of it all.

Initially I ran some tests on the raid volume and wrote a large 100GB file filled with zeroes all over it to be sure that it was functioning normally. After that I proceeded to copy files over from the NTFS volume to the LVM volume. which resulted in lots of errors on my terminal and complete loss of the entire filesystem. Even a simple ls -l / resulted in "Bus Error" although the system still kept running for a few seconds, until it finally froze and spontaneously rebooted. Since then I ran memtest to be sure my memory is fine, and tried alternative ways of mounting the volumes, and copy methods. Each attempt resulted in either a complete freeze or instant reboot. After 6 reboots, I managed to copy 20GB out of 490GB. Obviously this will take forever this way.

/var/log/messages is unhelpful. There are a bunch of cryptic messages regarding ATA bus errors (mostly CRC errors it seems) and soft resets when the LVM volume get mounted, but everything functions fine until I touch the NTFS volume.

Here are some of them:

Code:
Dec 22 02:32:15 localhost kernel: ata6.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
Dec 22 02:32:15 localhost kernel: ata6.00: BMDMA stat 0x4
Dec 22 02:32:15 localhost kernel: ata6.00: cmd ca/00:80:02:a5:fb/00:00:00:00:00/e7 tag 0 dma 65536 out

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