I have a Macbook Pro (10.5.6) and an iPod Touch (2.2 firmware). When my mbp is connected to the network wirelessly, I cannot access network apps on my touch (touch apps are 1passwd, airshare, ping, ...). However, when the mbp is connected via a wired cable, I can access all the touch network applications just fine. I can access the touch over wireless from windows xp machines I have on the network and from other ipod touches on the network. The only problem is when the mbp is connected wirelessly that I can't access the ipod from the mbp. The touch has no problem with network connectivity to the internet or other devices on the network. To rule out my wireless access point, I created a wireless network directly on the mbp and had the touch connect to that and still I can't communicate between the mbp and the touch (the touch does receive an ip using dhcp). I had another touch connect to the same mbp wireless network and both touches can communicate with each other through the mbp wireless network, but neither can communicate directly to the mbp (e.g. can't ping the mbp). Does anyone have any ideas on what the problem could be? Thank you.