Well it's about 6 months too late, but finally the Motorola Atrix could start performing like it should have done out of the box - with Gingerbread on it.

It was announced in fanfare style as per usual for it's non-US customers on the motorola forums....

The upgrade to Android 2.3.4 (Gingerbread) is now available for Orange UK Motorola ATRIX owners.
T-Mobile customers, we are in final approval stage and so the update will come to you within a week.

Please visit
www.motorola.com/update
or
www.motorola.com/myatrix
to for instructions and to download.
The update isn't yet available OTA but can be gotten using the Motorola Phone Software update program available here

Ben