With the configuration described above, with the 802.11n access point (base station) pretty close to the BD390 (30 ft), I saw regular breakups when watching Netflix instant videos. When I ran Internet speed tests on my PC, it always showed 15mbits/sec. When I switched to a hard wired ethernet cable, everything works fine.
I'm surprised that Netflix can't handle hiccups from the wireless network. I wonder if it's some sort of bug with the wireless software. Anyway, I just thought I share this in case other people have similar problems.
Ben in Chevy Chase, MD