That's the track I'd try to follow - looks like a very promising way to come closer to the problem, actually already reproducing it...?

Well, that's *similar* to reproducing it, but I'm fairly sure the content type handler *is* returning something in these cases. So something else is clearing the content type, or Apache or mod_perl is not able to read it from the response object for some reason.

Will certainly post anything I find, altho it may not be for sometime...