Lost Internet sharing after sleep

I share my mac mini´s internet conection (ethernet) to other computer (ibook) using Airport.I do set a password for it using WEP. It all work fine. But if I put the mac mini to sleep and then wake it up, the shared internet stops working. If I try to connect from the Ibook it says that the password is incorrect. If I set up the connection without a password it would work fine even after a sleep time. So something gets corrupt with the WEP password after the mac minis wakes up, I guess...
My second problem after wake up my mac mini is that my USB keyboard(non apple) get corrupt with some keys. So I have to unplug it and plug it again and then will work fine again.
Those two problems start just after I did a "security update" with the Apple software update.
Thanks.
Damião.

I have the same problem.
Did anyone find a solution for this?
I have tried the solution described in,
http://www.macosxhints.com/article.php?story=2009110114123254
and,
http://www.macosxhints.com/article.php?story=20021014052604432
but none of them worked.
Thanks.

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I have spent a goodly part of this weekend trying to solve this problem, the time has now come to seek assistance from someone who might know what they are doing!
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Lost Internet sharing after sleep

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