Asterisk, IAXModem and SUSE 10

Hi forum.
I compiled astrisk 1.2.6 on SUSE 10 and also the latest IAXModem
(sourceforge.net/projects/iaxmodem)
Every thing works fine (dial in, out send faxes and receive faxes with hylafax and make telephone calls)
Asterisk is started with -vvvc.
How ever if i receive long faxes i can see the message
"glibc detected double free or corrupt…" in my console and asterisk cuts the line
Maybe the libs / compilers of SUSE 10 act a litte bit different ?
Can i find a core file ?
Thanks for some hints
regards
Andreas