I had this error as well after upgrading this morning. While my laptop was at work today, it kept disconnecting from the network. Upon arriving home, I changed my DNS servers over to those of OpenDNS and haven't had a problem since. I even deleted and recreated my two wireless connections. Without OpenDNS, I will get the error every time. With OpenDNS, I do not get it.
I had this error as well after upgrading this morning. While my laptop was at work today, it kept disconnecting from the network. Upon arriving home, I changed my DNS servers over to those of OpenDNS and haven't had a problem since. I even deleted and recreated my two wireless connections. Without OpenDNS, I will get the error every time. With OpenDNS, I do not get it.