I know for a fact that Leopard seems to work fine with Apple's router, but I've been having a lot of problems with Leopard and my Linksys Wireless N router here at home. Once and a while it will just give itself a self-assigned IP address and that's that. The only way to fix it is to reboot my Mac and my router, which usually causes it to grab a real one. Funny thing is I can switch to my neighbours connection (sssh, don't tell), and it works fine even in that state, so it's something about the Linksys it doesn't like. Seems like there's a problem with 10.5.1 and some wireless routers. Mine actually ...