Hi Pierick Mellerin,
I am afraid that the problem is not fixed yet. We will do our best to fix the issue for the next Q2 release.
I am sorry for the inconvenience caused.
the Telerik team
Q1’11 SP1 of Telerik OpenAccess is available for download
; also available is the Q2'11 Roadmap
for Telerik OpenAccess ORM.