asterisk users - Aug 2009 - chan_iax2.c:1219 __send_lagrq mesages

Hi,
I am getting the following messages for a few days.

WARNING[10148]: chan_iax2.c:1219 __send_lagrq: I was supposed to send a
LAGRQ with callno 15691, but no such call exists (and I cannot remove
lagid, either).


I got 2 iax trunks  which used by test purposes only.
And no iax clients or no calling rules thru this iax channnels so far..

So why do i keep getting that messages.