[tlug] My Amputated Leg Hurts: Transceiver State Has Changed to SE mode

[lists <lists@example.com>]

I've got a low-end Dell Poweredge server sitting there running RHL 7.2 and 
merrily serving mail, and everything's great.

Except that I've started getting a bunch of these messages in my system log:
# grep scsi /var/log/messages
Jun 16 09:30:04 green kernel: scsi1: Transceiver State Has Changed to SE mode
Jun 16 09:30:05 green kernel: scsi1: Transceiver State Has Changed to LVD mode
Jun 16 09:30:15 green kernel: scsi1: Transceiver State Has Changed to SE mode
Jun 16 09:30:15 green kernel: scsi1: Transceiver State Has Changed to LVD mode
[skipped a bunch]
Jun 17 16:37:47 green kernel: scsi1: Transceiver State Has Changed to SE mode
Jun 17 16:37:49 green kernel: scsi1: Transceiver State Has Changed to LVD mode
Jun 17 16:37:50 green kernel: scsi1: Transceiver State Has Changed to SE mode
Jun 17 16:38:01 green kernel: scsi1: Transceiver State Has Changed to LVD mode

As far as I know nothing's plugged into scsi1:
# cat /proc/scsi/scsi
Attached devices:
Host: scsi2 Channel: 00 Id: 00 Lun: 00
   Vendor: MegaRAID Model: LD0 RAID5 51834R Rev: 161J
   Type:   Direct-Access                    ANSI SCSI revision: 02

Anyone know what this might mean?

Edmund Edgar