[gnome] Network manager can't connect to my wifi and keep asking for access key

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http://ubuntuforums.org – Hi everyone, well, I have been searching for two days now, and haven't found any solution to my problem. SO, basically, here it is : I used to be able to connect to my home wifi without any problem. I had a WEP key. A few days ago I used Backtrack 5 on my computer (usb-boot) and tried to find MY wifi's key, because I wanted to test it. Well, seing that in less than 3 minutes it could get my key, I decided to put a WPA key in. Now I try to connect to my wifi and it doesn't want to connect anymore.. Basically it asks me the Wifi key, I type it, press connect and it works for a while, but then i (Hardware)