[asterisk-users] channel.c: Avoided initial deadlock

[asterisk]

Hi all,

Can tell me somebody what meen : channel.c: Avoided initial deadlock

Our customer makes calls with our softphone (with IAX2).
Sometimes the softphon freezes. The call is ACTIVE but the user cant 
hang it up.
At this time in the log file (asterisk/messages) appear the next line:
channel.c: Avoided initial deadlock.....

we use: SVN-branch-1.2-r46176M
with VoIP channel (ADSL)

Can you help me? What is the problem?