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I was hijacking another (solved) thread, but I think it's better to start a new thread for this problem...
I have a D-link DWA-131 USB dongle and it was working perfectly with kernel 2.6.x. After the update to 3.0 it started acting weird: sometimes it seems the connection from some applications is just refused. For example, when I update the system, pacman will fail to connect to [core] but it will connect to the other repositories. If I run pacman again, it will work properly with all repositories. When I launch minecraft, it will not connect the first time, even if I tell it to retry. If I close it and launch it a second time it will connect without problems 100% of the times.
This behavior is perfectly reproducible, but I don't know exactly how to troubleshoot the problem.
Any Idea? Networkmanager reports I'm using r8712u driver.
Thanks a lot!
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