Wifi is not auto connect after resume from sleep
I keep my Mac Book Pro up-to-date with software updates.
I recently update to OS X 10.8.3 (12D78).
Since then when I open my laptop after closing it and put it to sleep the wifi connection does not re-connect automatically.
I have to click on the wifi sign near the clock and select the network to connect to.
How can I make it connect automatically like it used to?
MacBook Pro, OS X Mountain Lion (10.8.3), With Parallels