Yes. I've had some terrrible problems with fileevent.

Setting one up has caused my socketeering programs to hang indefinitely. I tried several different ways of opening the socket before passing it to fileevent for read/write polling, but got the same behaviour everytime. Then I hit the web (it was before my days on PerlMonks) and found a few references to "We're working on fixing this! It's broke on Windows!" At said point, I wrote a $mw->repeat to accomplish c-style polling.

Perhaps in the near future I'll present this problem to the monks. It seems a good idea...

Peace, monks. I'm off to work.