Wi-Fi don´t work after 10.7.2 update

Help, before 10.7.2 a have a lot of problems with Wi-Fi, at least it drops two times a day, now after 10.7.2 update Wi-Fi don´t work, i can´t activate it, what i need to do?
I Have a MacBook 13-inch, Early 2008

same here - 10.7.2 trashed my wifi connectivity. I have 2 networks running, a G and an N. My laptop running 10.7.1 sees both, my Mini running 10.7.2 only sees the G network - doesn't see the Airport Extreme running an N network.
What an absolute pile of dog doo-doo Lion is. So many many faults and problems, I so regret installing Lion.

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The multi level "isolation mode" don't work after the last upgrading to Illustrator CC 18.1.0? by the right mouse button menu
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