Having the same issue...contacted Motorola, who gave me some things to try (sim card removal, toying with wireless settings, etc.) and none of them worked. Issue only popped up until I went from 2.3.4 to 2.3.6. It's NOT the router/modem or the Atrix hardware. It is an update issue, which needs to be resolved. It looks as though the Atrix wifi adapter is turning itself off and then back on again.