Problems with valgrind on AMD64

I am using the RC1 on AMD64 and have problems with the valgrind (valgrind-3.0.1.SVN) there. It prints 'valgrind: the 'impossible' happened: Killed by fatal signal' and exits on my program. I attached the valgrind output. Lothar -- Lothar Werzinger Dipl.-Ing. Univ.