[xml] libxml and thread

[BDM <benoitdm onasius net>]

Hello,
I am running a Debian x86_64 box with 2.6.30 kernel and gcc (Debian
4.3.3-11) 4.3.3
Since 6 months (approximately) I can not run my code which create a
thread and use libxml within this thread. Yesterday, I retrieve the last
source version of libxml2 to try the test suite. And the testThread
coredump.
I have compiled the lib with ./configure --with-mem-debug
--with-run-debug && make
and ran testThread against valgrind but I can't get nothing more than
"segmentation fault" ! No stacktrace, nothing ...

1- do you already know this coredump problem ?
2- can you explain me why there is nothing in the valgrind output (the
latter one works well with my other pieces of software) ?

Thanks !