UDMA ICRC error

[white vamp]

i keep getting this in my securty run mailings and in my logs
what dose this mean ? my HD going bad or what ...
ad0s1b: UDMA ICRC error writing fsbn 1418815 of 197376-197503 (ad0s1 bn 
1418815; cn 88 tn 80 sn 55) retrying
ohh ond its different every time aswell

vampextream# uname -a
FreeBSD vampextream.com 4.9-RELEASE FreeBSD 4.9-RELEASE #0: Mon Oct 27 
17:51:09 GMT 2003     
root at freebsd-stable.sentex.ca:/usr/obj/usr/src/sys/GENERIC  i386

and thx inadvance for any help on this ..

David D.

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