I found that I couldn't connect at all until I put my network into WPA2 only mode. (Before it was WPA/WPA2 auto.)
Then for quite a while I could connect. After my Eee PC (1000H) was on standby for a while I noticed I couldn't connect again. I restarted the network manager service and connected again..
Perhaps someone else wants to try one or the other of these steps out and report to this dialog?Code:sudo service network-manager stop sudo service network-manager start
Fix released time ago. Check out comments how to fix: