[boost] Is program_options unmaintained?

Hi, a couple of weeks ago, I reported a bug in the program_options library to the author, Vladimir Prus, but received no response. Then I tried reporting the problem on the boost-users mailing list, but didn't receive a response either. Since then, I've seen at least one other poster on the boost-users list wondering about this library, but did not receive a no response either. Does anyone still maintain the program_options library? More generally speaking, what is the procedure if it turns out that a Boost library *is* unmaintained? Take care, Peter