Thanks for the heads up!
Ok I will try to keep this short and sweet.  I told the Dell tech that I was talking to that I would write this on the forum.  So there is an issue with Dell E6400 connecting to WPA2 with the current drivers (released in April).  It will connect but then cause performance issues or not connected at all.  I finally got it resolved by installing the WIN7 drivers on the link below.  The techs that I talked to at Dell did not know about these new drivers so here is the link [URL]     So I hope this helps someone.
Dell E6400 Win7 WPA2 issue