[asterisk-r2] r2 channels blocked IDLE SEIZE

[Guryi]

HI, all!

My problem - channels became blocked by this sort of call: 
and i cant receive inbound call on this channel

most*CLI> mfcr2 show channels
32 ITU     20      15       Yes       No               IDLE     SEIZE

i'm using asterisk 
Asterisk 1.6.2.24 built by root @ most on a i686 running Linux 
DAHDI Version: 2.6.1 
openr2-1.3.2

so i need daily restart asterisk to fix this IDLE SEIZE state. And this is bad =(

the call :

[10:27:19:401] [Thread: 3063446384] [Chan 32] - M - Call started at Wed Mar 13 10:27:19 2013 on chan 32 [openr2 version 1.3.2, revision (release)]
[10:27:19:401] [Thread: 3063446384] [Chan 32] - M - Initialized R2 MF detector
[10:27:19:401] [Thread: 3063446384] [Chan 32] - M - CAS Tx >> [SEIZE ACK] 0x0C
[10:27:19:401] [Thread: 3063446384] [Chan 32] - M - CAS Raw Tx >> 0x0D
[10:27:19:481] [Thread: 3063446384] [Chan 32] - M - MF Rx > 5 [ON]
[10:27:19:481] [Thread: 3063446384] [Chan 32] - M - scheduled timer id 3 (mf_back_cycle)
[10:27:19:541] [Thread: 3063446384] [Chan 32] - M - MF Rx > 5 [OFF]
[10:27:19:621] [Thread: 3063446384] [Chan 32] - M - MF Rx > 5 [ON]
[10:27:19:621] [Thread: 3063446384] [Chan 32] - M - scheduled timer id 4 (mf_back_cycle)
[10:27:19:681] [Thread: 3063446384] [Chan 32] - M - MF Rx > 5 [OFF]
[10:27:19:781] [Thread: 3063446384] [Chan 32] - M - MF Rx
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