Critical semphore errors on a DS16B switch ...

Here is a fun one. Maybe someone can help with it.

On a DS16B switch, when the RAPID service is disabled, it will burp out SEMA-GIVE errors and SEMA-TAKE errors immediately when connecting to a switch via telnet. They appear before the login prompt and do not reappear any time else. The switch operates fine and doesn't seem to mind. All of the system services are turned off (rstatd,rusersd,thad, SNMP, Http etc.). Re-enabling RAPID gets rid of the errors. So it looks like the lack of this service is causing the msgs.
I tried various levels of firmware and that doesn't help. (It's at current rev now.) Turrning off/on the other services doesn't help either. The other brocade switch models do not have this issue only this hardware model.
Any insights would be appreciated. Thanks.

Here is a sample ...
0x102bd960 (tShell): Mar 22 08:31:58
CRITICAL SEMA-SEMTAKE, 1, semaTake, sema = 0, errno = 0x3d0001
Traceback:
_semaTake+0x344 (0x104f89b4)
_ranRscnDeregister+0x1d8 (0x10769ff8)
_event_sendSec+0x74 (0x1076a214)
_shellTask+0x208 (0x10417188)
_vxTaskEntry+0x10 (0x1096ec54)

0x102bd960 (tShell):

Fabric OS (tm) Release v3.2.1b

login: Mar 22 08:31:58
CRITICAL SEMA-SEMGIVE, 1, semaGive, sema = 0, errno = 0x3d0001
Traceback:
_semaGive+0x38 (0x104f8648)
_event_sendSec+0x74 (0x1076a214)
_shellTask+0x208 (0x10417188)
_vxTaskEntry+0x10 (0x1096ec54)