I have an unlocked Atrix with Fido in Canada. I can't use the default Mobile Hotspot because it says I need to get it enabled through AT&T. I've tried Barnacle and WiFi tether and although they work as a wifi hotspot, the Xoom cannot see either network. I think both run as Ad-hoc networks and the Xoom does not see Ad-hoc networks. Anyone able to get their Xoom connected through their Atrix using a WiFi hotspot? If so, can you let me know how you got it working?