My Macbook Pro (early 2011 13") keeps forgetting the Wifi password when it gets woken from sleep. I know that there have been a number of threads where the Mac cannot connect to the router after sleeping but mine will not connect automatically and then when I try to connect manually it will tell me I have the wrong password even though I have entered it correctly! Seems a very odd fault, why would it forget it? or is the router forgetting its own password? I have tried deleting the keychain entry and things like that. sometimes rebooting the Mac cures it straight away and it connects again without any input from me. We have an iMac and multiple iDevices in the house that have no problem. Anyone got any ideas? its starting to bug me now!