Hello, As of recently, the serialization test of Boost.MultiIndex has begun failing in Compaq C++ for Tru64, the behavior being a failed asertion at tkmap::insert(): http://tinyurl.com/kfqfs The test used to work, but has hundergone a significant change that I've got the hunch might be related to its currently failing: previously all serialization tests were performed in a single translation unit named test_serialization.cpp, while now the code has been split (for reasons irrelevant to this discussion) into two files test_serialization1.cpp and test_serialization2.cpp. Does this ring some bell? I've scanned the net for more info, the only thing I found is a reference to the same assertion at: http://lists.boost.org/boost-users/2006/02/17253.php but there's no conclusive answer in that thread, alas. Any help much appreciated, thank you in advance, Joaquín M López Muñoz Telefónica, Investigtación y Desarrollo