Whoa, something very weird is going on. My wifi connection is terrible. My fairly reliable D-Link DIR-655 (1.34NA firmware) now dips down to pretty much zero service and back to full every 20-30 seconds. This is nuts. Gonna try the 1.35NA firmware, but that just disables SecureSpot…Lots of complaints about this software (http://forums.dlink.com/index.php?topic=10714.0), so hopefully disabling it will help.

Well, new firmware seemed to have fixed things: