The main reason I have not gone to an OWA setup is that my old Sharp microwave interferes with 2.4 Ghz phones. When the Sharp dies and if the new one doesn't have the same issue I will give it a try. Most WiFi setups have selectable frequency ranges close to but not exactly on the same frequency. Try a different frequancy to see if it helps. If the OWA is on the same or very close frequency it will get interference.
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner