Hi, the documentation states that the a lot of functions throwing in the Thread library throw thread_resource_error. I have do a grep on new allocation and I get Vicente@viboes1 ~/SVN/boost/thread $ grep -r "new " * detail/thread.hpp: std::auto_ptr<thread> new_thread(new thread(thread func)); pthread/thread_heap_alloc.hpp: return new T(); pthread/thread_heap_alloc.hpp: return new T(static_cast<A1&&>(a1)); pthread/thread_heap_alloc.hpp: return new T(static_cast<A1&&>(a1),sta tic_cast<A2&&>(a2)); pthread/thread_heap_alloc.hpp: return new T(static_cast<A1&&>(a1),sta tic_cast<A2&&>(a2), pthread/thread_heap_alloc.hpp: return new T(static_cast<A1&&>(a1),sta tic_cast<A2&&>(a2), pthread/thread_heap_alloc.hpp: return new T(a1); pthread/thread_heap_alloc.hpp: return new T(a1,a2); pthread/thread_heap_alloc.hpp: return new T(a1,a2,a3); pthread/thread_heap_alloc.hpp: return new T(a1,a2,a3,a4); thread_specific_shared_ptr.hpp:// We don't need any more a new class thread that inherits from boost::thread, thread_specific_shared_ptr.hpp: tss_ptr = new tss_type(* this); win32/condition_variable.hpp: entry_ptr new_entry(new list_en try(wake_sem)); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(st atic_cast<A1&&>(a1)); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(st atic_cast<A1&&>(a1),static_cast<A2&&>(a2)); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(st atic_cast<A1&&>(a1),static_cast<A2&&>(a2), win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(st atic_cast<A1&&>(a1),static_cast<A2&&>(a2), win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(a1 ); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(a1 ,a2); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(a1 ,a2,a3); win32/thread_heap_alloc.hpp: T* const data=new (heap_memory) T(a1 ,a2,a3,a4); Where the std::bad_alloc exception is catched? Vicente