Hi, I'm having an assertion failed when trying to finish my application. I use Boost.Thread to create one thread and use serialization and spirit that I know use threads either. It wasnt happening when using an earlier boost cvs version... And for some reason I'm not being able to debug it, when trying to the app finishes when reaching the MSVC. I'm using MSVC 7.1 and the assertion is: File: boost-path\libs\thread\build\..\src\tss_hooks.cpp Line: 131 Expression: attached_thread_count == 0 This application uses different threads to create and destroy objects throughout its lifetime(probably even the static/singleton objects). It is an COM object and is accessed through "RPC", where the creation of the singletons takes place... If anybody has any clue to what it could be, I would really appreciate. I'm going to update my boost to the RC2 and see what happens. Thanks in advance, Felipe. -- Felipe Magno de Almeida Developer from synergy and Computer Science student from State University of Campinas(UNICAMP). Unicamp: http://www.ic.unicamp.br Synergy: http://www.synergy.com.br "There is no dark side of the moon really. Matter of fact it's all dark."