ATA problems and boot problems.

I'm running F8.  Yesterday the system froze.  Now when I boot half the time I get

"Booting Fedora 2.6.25.11-60.fc8
root (hd0,1)
Error 5" Partition table invalid or corrupt"

The other half of the time when I boot up I'm getting lots of errors.  Here are ones I see when the system boots

Sep 11 08:41:34 localhost kernel: ata3.00: exception Emask 0x12 SAct 0x0 SErr 0x780401 action 0x2
Sep 11 08:41:34 localhost kernel: ata3.00: BMDMA stat 0x4
Sep 11 08:41:34 localhost kernel: ata3: SError: { RecovData Proto 10B8B Dispar BadCRC Handshk }
Sep 11 08:41:34 localhost kernel: ata3.00: cmd 25/00:08:b8:03:ec/00:00:11:00:00/e0 tag 0 dma 4096 in
Sep 11 08:41:34 localhost kernel:          res 51/84:00:bf:03:ec/84:00:11:00:00/e0 Emask 0x12 (ATA bus error)
Sep 11 08:41:34 localhost kernel: ata3.00: status: { DRDY ERR }
Sep 11 08:41:34 localhost kernel: ata3.00: error: { ICRC ABRT }
Sep 11 08:41:34 localhost kernel: ata3: soft resetting link
Sep 11 08:41:34 localhost kernel: ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Sep 11 08:41:34 localhost kernel: ata3.00: configured for UDMA/33
Sep 11 08:41:34 localhost kernel: ata3: EH complete
Sep 11 08:41:34 localhost kernel: sd 2:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
Sep 11 08:41:34 localhost kernel: sd 2:0:0:0: [sda] Write Protect is off
Sep 11 08:41:34 localhost kernel: sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

My question is does this appear to be a HW or SW problem?  Can anyone interpret the ata errors and the partition table error for me.

Thanks,
/Bob Cahn

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