keep losing wireless connection

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http://crunchbanglinux.org – it starts to bother me now. everything would be smooth and fine and dandy everytime I boot my netbook. but halfway through my surfing I lose my connection with the networks and I couldn't get it back. nm-applet would try to reconnect three times and I would be prompted to key in wpakey those three times. after that it would tell me I have just been disconnected. I would click on nm-applet and I would find my networks is not listed anymore. I would then reboot. the cycle would start again. help meand i noticed it is more prone to losing connection when I start heavy traffic stuff like&nbsp (HowTos)