Hi, Our current code base uses Apache Runtime Library for handling multithreading code, including threads, concurrency control, etc. We are currently starting to convert to the Boost thread library. During the conversion which might take a while we would like to be able to mix the threads from the APR library with concurrency control objects (mutexes) from the Boost library. Is this ok to do this or will we run into some strange issues? We are currently running the code on Windows and Linux. Please let me know if I can provide any specifics about the APR library to better answer this question. Thank you! Alex