Asterisk, IAXModem and SUSE 10

Hi forum.
I compiled astrisk 1.2.6 on SUSE 10 and also the latest 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