Carl removed the valve cover of my '05 Elise (31000 miles) and we were surprised there were minimal wear on the cam lobes! I'm lucky in this case. That does not discount that there are many other '05-'06 Elises out there that has the cam problem.
I applaud SuperVixen's post and the dealer that takes this problem seriously!!
Here's a task for you: If you have a few hours, remove the valve cover (properly of course) and inspect for wear. Let's find how many Elises have the problem. Note the year, mileage and the use (street or track or both).
Toyota engine design problem? Let's get this done.
--Hal