asterisk users - Nov 2005 - Bristuff 0.2.0-RC8o or 0.2.0-RC8n (* 1.0.9)

Kernel 2.6 + CentOS 4.1

All work perfectly but Hangup() dont work

in log/asterisk/full

Nov  5 11:58:04 DEBUG[8299]: zt_hangup(Zap/1-1)
Nov  5 11:58:04 DEBUG[8299]: Set option AUDIO MODE, value: ON(1) on Zap/1-1
Nov  5 11:58:04 DEBUG[8299]: Hangup: channel: 1 index = 0, normal = 9,
callwait = -1, thirdcall = -1
Nov  5 11:58:04 DEBUG[8299]: Not yet hungup...  Calling hangup once
with icause, and clearing call

Why ?
Please help me.

--
Giovanni Miano