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I've installed ubuntu 12.04 (making a dual boot with xp colossus edition). I've got an encore wirless n150 mini adapter http://www.encore-usa.com/ar/support/ENUWI-1XN4M

My problem is that ubuntu shows the wifi network is conected but if I try navigate on fairefox I can't (while windows shows no problem at all)

This is the first time I've evere used any linux distro so Im kind of lost and dont really know what to do.

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did wireless work from the live CD? If not please follow this guide and edit your question to report any outputs from the various commands: help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide –  virtualxtc Jan 27 at 20:09

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