Hello, This is a platform specific problem, platform is RHEL4. We use boost::serialization code, and linked with their static library. And the problem we are facing that all of our exception handler codes are not working any more i.e. catch handler is not called if an exception is thrown. We are not even calling the boost::serializer code. If we remove serializer code everything works fine. Serializer code works pretty fine in suse platform. Now my question is how come exception handler codes are not executing just because we are linking with serializer library. Any insight will be helpful. Thanks, Krishanu