I knew about Comcast dropping P2P torrents by sending fake reset packets, but I don't actually know anything about P2P. Does that use UDP? Does that mean AH would be affected by such shaping (I guess zero is a shape)?
I too have noticed some strangeness lately. Pingplotter won't show any problems, but AH will sometimes become unresponsive, taking many seconds, for example, to change fields or bring up status screens. This sometimes leads to a disco.