As mentionned in the Ermine related forum, my 5 weeks old PE suddenly decided to transform itself into a lighthouse : The LCD (tablet) screen stays completely white (all pixels on) when the device is on.
It happened when I awaken the device back from hibernation.
Called and write to the technical support. (April 13, 2011, 2 PM EST)

First reaction of the tech support over the phone was to make me revert the device from Ermine to Dingo as entourage doesn't provide support for Ermin over the phone or through email. (Fair enough, it is written on the page you have to agree when you choose to upgrade for Ermine).

I received the instructions for reverting by email as well as an answer to the email-sent ticket. Both arrived around 3:30 PM same day.

Reverting to Dingo did nothing, therefore I specifically asked for a RMA form (In the answer of the tech support emails). Will phone them again if no answer.

To date, I should say that the Support service is correct, even if I found the revert to Dingo step quite unefficient, as my problem seems related to the hardware.

[UPdate] Now going through tier-3 support. Awaiting sign of life from tier-3 within the next 48 hours, which means not before next week as we are friday.

I will update this post when the situation will be updated !
Qwill.