hi,
decided to piggyback on this thread since OP's issue has been long since resolved.

my issue with skype pertains to skypeout in particular (from skype to phone)

problem: when making a skypeout call while connected to wifi at home, call gets disconnected every time other party picks up the call.

points to note:
router is apple time capsule
skypeout works when i login from my flatmate's icrap at home
skypeout works when on 3G
skypeout works over wifi when at my parent's place (linksys adsl2 modem/router)
skypeout doesnt work when changing router to netgear and setting n900 as dmz

cant try the linksys router at my place since it's a modem
can anyone offer some advice?

thanks,