I was replacing a router for reasons unrelated to my infocast (3.5). The infocast was working fine on the "old" DLink 632 router. After replacing the router with a DLink 825, I had a heck of a time getting the two infocasts I own to work. Sometimes they would connect. Most times not. Sometimes they would not see any network. Other times they would.
As a point of comparison, I have about eight other wireless devices throughout the house, including a Sony dash. All connected to the new router without problem, at all points throughout the house.
After too many hours trying different things with the infocast and router settings, I was able to get both to work. I am still not sure which changes I made were the ones that solved the problem. At this point, I have the old router networked to the new, with both wireless systems active. One infocast is linked to the new, one to the old.
My perception after all this is that the infocast is not an especially good reciever of wifi. While I have purchased the hottest wireless router I could find, and most other devices show a good signal strength throughout the house, the infocast shows a low signal strength when moved more than a room away from the transmitter.