Any suggestions would be most appreciated. Still says I time ou or invalid password (network name and password still work on the HP, Dell, and all iPads). I have tried resetting the PRAM per this post. It seemed to start working on the Mac, but one by one, the 'light' buttons on the network connection window went from green to red (wi-fi settings, network settings, isp, internt, and server all go from green to red 'failed'). I did a hard-reset of the router and have a new network name and key. I tried multiple times and kept getting an error message (depending which route I used to connect, either clicking the network icon or using the troubleshooter, it told me I was timed-out or the password was invalid). I went to connect last night and the Mac wasn't connected. Unpacked them, hooked them up to the network, everything fine.for a week.
Then I decided to cross-over to the light and get a MacBook Air and got my wife one also (I have a 13' she has the 11'). A friend could come over and hook up no problem. Everything runs fine off of our router (Linksys WRT160N v2). Two kids have an older (white) Mac laptop.
We both also have iPads (and 3 more 1Pads scattered among the kids). Had been using a HP elitebook2540p for work. Since OP has not revisited for some time, think this is best place to post because I am having the same issues. OK - I am hi-jacking this thread - kind of.