I actually had it happen to me this morning. We were experiencing heavy rains, and while I was getting ready for work, the power flickered a couple of times. It was enough to drop my access point. When I went down and reset it, I connected the N810 to it but could not reach anything in the browser. I can't say for certain that this has happened any other time I have had the problem, but maybe the WAP is taking micro hits, which is causing something in the wireless driver to come unglued. *shrug*. I tried connecting to the wireless at work (without a reset) and am experiencing the same problem. A reboot will fix it.