FC6 Message log increasing

[Mark]

Hi guys

After installing the FC6 I notice that the /var/log/message file is
growing up fast and these are the messages that are on this file, my
hard drives are working all time, this didn't happened on FC3, does
anybody know what I can do in order to fix this, I have to delete the
message log each two hours because it's arunt 500Mb large.

Nov 17 11:40:00 Matrix kernel: sd 0:0:1:0: phase change 6-7 11 at 3686cb9c
resid=2.
Nov 17 11:40:00 Matrix kernel: sd 0:0:1:0: phase change 6-7 11 at 3686cb9c
resid=2.
Nov 17 11:40:00 Matrix kernel: sd 0:0:1:0: phase change 6-7 11 at 3668839c
resid=2.

Any help will be appreciated...

Thanks
Mark