CentOS - Apr 2012 - More on the ATA sense error

AFAIK, no one's responded to me about whether I should just turn off smartd.

At any rate, here's more info: this server only started spitting
Apr 25 07:47:50 <server> kernel: sda: Current [descriptor]: sense key:
Recovered Err
ror
Apr 25 07:47:50 <server> kernel:     Add. Sense: ATA pass through
information availl
able
Apr 25 07:47:50 <server> kernel:
Apr 25 07:47:50 <server> kernel: Descriptor sense data with sense
descriptors (in hh
ex):
Apr 25 07:47:50 <server> kernel:         72 01 00 1d 00 00 00 0e 09 0c 00
00 00 00
00 00
Apr 25 07:47:50 <server> kernel:         00 4f 00 c2 40 50

for every drive - and it has four - right after updated to the most
current kernel
2.6.18-308.4.1.el5 #1 SMP and rebooted.

So one question becomes three:
   a) should I turn off smartd?
   b) should I reboot to the previous kernel, and see if it keeps up?
   c) is this a known bug?

        mark