[lubuntu] Really slow wireless, encore wireless n150 adapter

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http://ubuntuforums.org – I just put lubuntu 11.1 on my old desktop (a dell dimension 3000), but when I put in my wireless usb adapter (encore wireless n150 usb adapter), I'm getting really slow internet speeds. It takes anywhere from 20 secs - 5 minutes for me to open google news. Also, if I go to network connections, and edit my connection, the connection is completely lost, and it doesn't reconnect until I restart. Anyone got any ideas? (Hardware)