[ubuntu netbook remix] Wireless suddenly stopped connecting

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http://ubuntuforums.org – I have Ubuntu 10.04 installed on an EEE PC 1005HA. I have installed an Intel 6200 wireless card. I have been using it problem free for the past few months, but starting yesterday I can no longer connect to wireless networks, although I can see them and try to connect. This is a significant problem for me because I am currently travelling in SE Asia. I tried downloading the latest 10.10 Netbook Remix and making a bootable flash but I haven't been able to get it to boot, in spite of having tried Unetbootin, the windoze tool suggested on the ubuntu site, and the startup disk creator on my net (HowTos)