[ubuntu] On my MacBook 4,1 Ubuntu 10.10 has a much lower signal than Mac OSX?

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http://ubuntuforums.org – Does anyone know why? I installed 10.04 1st by making a partition with bootcamp on MacOSX. Then I formatted the partition according to Ubuntu's instructions. I didn't install rEFIt, because I prefer to just hit the alt (option) key. I made the necessary adjustments according to https://help.ubuntu.com/community/MacBook4-1/Lucid - Community Ubuntu Documentation - and everything seemed to be working fine. I upgraded to Maverick and everything seemed to be working fine aswell. But then I noticed, that the wireless signal keeps failing and I'm asked to put the password again and again.. I don't t (HowTos)