I recently tried to install AnyEvent::Websocket::Server though CPAN and after hours it was still downloading and compiling modules

Heh ... did you then find that AnyEvent::Websocket::Server had, in fact, been installed christ-knows-how-many-modules-back ?
That's the variant that really annoys me.

It's happened to me a couple of times in the past - the last time being about 4 days ago (on MS Windows) wrt Math-Calc-Parser-1.005.
I don't know if that was actually the fault of that module but I find it very annoying when it happens - especially when much of the supplementary stuff is (regarded by me as being) sanctimonious shit, as is usually the case.

Update: Sorry for the rant at the end. Long dependency chains always irritate me more than they ought.

Cheers,
Rob