A friend has approached me with a problem regarding her Macbook Pro purchased a few months ago and utilising the Mountain Lion operating system. It appears that if the computer is allowed to sleep it does not automatically reconnect with the Wi- Fi router on being reactivated. Every time the computer is reactivated the connection has to be re-established by going to the menulet on the menu bar and clicking on the required Wi-Fi network (note the password does not have to be re-entered). This contrasts with the fact that when the computer is booted up from cold the Wi-Fi comes on and connects with the router automatically as normal. I, personally, do not use Wi-Fi and have no idea if this is normal behaviour. Can anyone enlighten me?