sata problem

Hi all.

During the weekend my server froze. I'm running FC5 with an Intel motherboard and a SATA HD. This is the important content of /var/log/messages

Oct 13 23:00:15 localhost kernel: ata1: command 0x35 timeout, stat 0x50 host_stat 0x21
Oct 13 23:00:33 localhost kernel: ATA: abnormal status 0x80 on port 0xE807
Oct 13 23:00:33 localhost kernel: ATA: abnormal status 0x80 on port 0xE807
Oct 13 23:00:33 localhost kernel: ATA: abnormal status 0x80 on port 0xE807
Oct 13 23:01:33 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 13 23:53:26 localhost kernel: ata1: command 0x35 timeout, stat 0x50 host_stat 0x21
Oct 13 23:54:37 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 13 23:55:49 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 13 23:57:50 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 14 00:00:29 localhost last message repeated 2 times
Oct 14 00:05:32 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 14 00:09:33 localhost kernel: ata1: command 0x35 timeout, stat 0x50 host_stat 0x21
Oct 14 00:11:33 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 14 00:15:13 localhost kernel: ata1: command 0x35 timeout, stat 0x50 host_stat 0x21
Oct 14 00:17:21 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21
Oct 14 00:18:21 localhost kernel: ata1: command 0x25 timeout, stat 0x50 host_stat 0x21


Does anybody have any ideas of causes/solutions?

Thanks in advance.

Fabio