7.2-RELEASE-p5 and kernel panic with mpt driver

[Colin]

Hi folks.
I updated my server from 7.0 to 7.2 over the Christmas period (sources 
updated to 26th Dec I think).

I have long suspected there was an issue with a hard drive in the server 
but the hosts told me that the useless messages logged by 7.0 were 
normal. Well it turns out one of the drives failed today and caused the 
array to keep changing status. This in turn caused about 20 kernel 
panics in until the hosts pulled the drive and put a new one.

I noted someone else talking about this back in May on the 
FreeBSD-stable list and the outcome seemed to be that a patch was rolled 
in but it would appear that whatever this patch is - I don't have it!

Can anyone point me in the right direction?
Thanks,
Colin.