Asterisk 11.3 hanging

Hi guys,

I have a great problem with Asterisk (version 11.3).
Running OS: Redhat golden Image 6 on a 64-bit VMWare (Kernel: 2.6.32-220.7.1.el6.x86_64).

The Asterisk is running stable, but sometimes they become a kind of semi death.
That means, when going on CLI the CLI stucks, but the Asterisk service is still running.
Only a restart of the service helps.

I looked into the logs and there is following entry several times:
Oct 8 12:32:02 voipcs6 asterisk[2684]: ERROR[11731]: astobj2.c:153 in INTERNAL_OBJ: bad magic number 0x7f69 for object 0x7f6920047090

The Asterisk is connected to a remote Oracle database over unixODBC.x86_64 (Version: 2.2.14-12.el6_3).

Does anyone have a hint?

Debug as a locking problem (build with thread debugging enabled - some performance issues, but many installations will tolerate these) or as general memory corruption problem (run under valgrind - this generally runs far too slowly to be usable in a production environment).