Stuck cleared VC (VC18)

Alguém pode me dizer o que significa essa mensagem que esta aparecendo no logs do SM
01:24:43 UT: Mon Jan 25 2011: Stuck cleared VC (VC18)


AP - Advance Version
Software Version : CANOPY 10.5 AP-DES
Board Type : P10
FPGA Version : 111010
PLD Version : 11
Ethernet Interface : 100Base-TX Full Duplex
Regulatory : Passed
Antenna : Vertical

SM
Device Type : 5.7GHz - Subscriber Module
Software Version : CANOPY 10.5 SM-DES
Board Type : P10
FPGA Version : 111010
PLD Version : 11
Antenna : Vertical