[Freeswitch-users] FS 1.2.5.3: Invalid Jitterbuffer spec [0] must be between 20 and 10000

Hi all, With 1.2.5.3 we're seeing a lot of this: sofia_glue.c:3549 Invalid Jitterbuffer spec [0] must be between 20 and 10000 our config hasn't changed. What can we read up on that has changed or is causing this? Thanks.