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It has been reported that in some situations, the WL510 will not be able to connect correctly to Hotspots that require the user to fill in a Login page. By default the WL510 uses public DNS servers to look up web addresses and convert then to IP addresses, but often these Login pages will not display unless the computer uses the Hotspots DNS server.
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To test that this has fixed the problem, turn off your WL510 and then turn it on again, close your browser and then open it again, use the WL510 to connect to the problem Hotspot and then try to go to a webpage.