I created this question on Superuser:
Cannot resolve hostname "raspberrypi" on home network
I'm still having trouble, so I'm searching the net and I stumbled across this page, which is a literal copy/paste of my question:
http://serverquestions.com/questions/j749/cannot-resolve-hostname-raspberrypi-on-home-network
Is this phenomenon known to the stack exchange admins? Is this OK? Should something be done about this? If so, what?
