I have three TiVo Premieres. Two are hardwired into my home network. The Living Room, however, is connected via TiVo Wireless N adapter. From time-to-time, the Living Room seems to "disappear" from the "My Shows" list on the other two TiVos. This has been an ongoing problem since I got the adapter. Because of this, I had to switch back to a slower wireless adapter but the transfer speeds became unacceptable once I upgraded to HD programming. It's connecting through a Netgear dual-band router. Has anyone else experienced this issue?