Hi, I was browsing the website for Boost.Thread 1.32 updates and became somewhat confused. This is just the few items I noticed during a quick browse. 1. The library isn't mentioned along with other updated libraries on the start page. 2. Quote from 'Design/The Next Phase': "The next phase will address more advanced synchronization concepts, such as read/write mutexes and barriers.". I guess this is just one of the mentioned "remaining inconsistencies" from the release notes. 3. In the release notes it is also stated that recursive_mutex is now implemented using a critical section under Win32. AFAIK this was already the case with 1.31 (or perhaps even earlier?). I also glanced a bit at the recursive_mutex implementation under Win32 and it looks a bit weird to me (this is just an extract): --- recursive_mutex.cpp --- ... recursive_mutex::recursive_mutex() : m_mutex(0) , m_critical_section(false) , m_count(0) { m_critical_section = true; if (m_critical_section) m_mutex = new_critical_section(); else m_mutex = new_mutex(0); } recursive_mutex::~recursive_mutex() { if (m_critical_section) delete_critical_section(m_mutex); else delete_mutex(m_mutex); } ... The if/else clause exists in virtually all methods even though there is no way to affect it from client code. Is this some kind of preparation for future improvements, just some cut and paste from recursive_try_mutex, or ...? 5. Last (but not least): Why aren't the more recent contributors mentioned a bit more up-front in the documentation - I think they deserve a lot more credit than this? // Johan