I don't know who this email goes to, but is there any resolution on this malloc_conslidate() hang issue? I seem to be having a simliar problem and I googled to find the web page refering to the problem http://mailman.mit.edu/pipermail/krb5-bugs/2004-February/002279.html This is what my stack trace looks like when I interrupt in the hang: #0 0x42074c47 in malloc_consolidate () from /lib/tls/libc.so.6 #1 0x42074ae8 in _int_free () from /lib/tls/libc.so.6 #2 0x42073786 in free () from /lib/tls/libc.so.6 #3 0x400be983 in operator delete(void*) () from /usr/lib/libstdc++.so.5 #4 0x400ac4dc in std::__default_alloc_template::deallocate(void*, unsigned) () from /usr/lib/libstdc++.so.5 #5 0x0805222e in std::_Deque_base >::_M_destroy_nodes(double**, double**) () #6 0x08050b3c in std::_Deque_base >::~_Deque_base() () #7 0x08067089 in std::deque >::~deque() () ... -Carl