Belkin Play B600 Duplicate IP Address Problem

I have a cable modem internet connection that's shared by several computers at home via a Belkin wireless router. A Windows Vista PC is actually wired to the router, the other computers are on a WLAN.

The router is at http://192.168.2.1/. The wired PC is usually at 192.168.2.2. Other wireless devices get addresses like 192.168.2.3, 192.168.2.9 etc., meaning: Everything is on the same subnet, contrary to my previous wireless router that used different subnets for the wired and wireless devices.

Sometimes the wired PC reports a duplicate IP address error. The "easiest" fix seems to be:

1. Power the PC down
2. Power-cycle the wireless router
3. Start the PC back up