I had the same problem after I upgraded the firmware on my BEFSR41B Linksys router. Two rio's would run fine on a hub with my linux server. The second I plugged in the linksys the rio would begin rebooting. It would find the server and just as it was beginning to get the music it would reboot. I tried various settings on the linksys to no avail. Finally I downgraded the firmware and the system worked again. I am using version 1.40.1, Sep 10 2001. There may be a newer one that works but I have tried the two newest and they did not work.