Same problem here.
My hardware is a Dell PowerEdge T410 with Serial Attached SCSI, PERC H200, Hardwre RAID1 configuration.
The only difference to the above is that I'm running CentOS 5.5 x64, which we all know is just a de-branded RHEL.
At bootup I get an error that looks almost exactly like the one above. The machine hangs there for about 30 seconds and then moves on. No apparent issues with the system other than the error.
Update: I found my answer on another forum:
it turned out to be just a cosmetic issue, stated by Dell support. The message can be avoided using the latest LSI module from the LSI website, but that one will not be supported by Dell.