Linq to SQL is a decent base level OR/M, and I had had several people tell me that they are willing to accept its current deficiencies, knowing that this will be fixed in the next version.

Windows Phone 7.5 includes support for LINQ to SQL, allowing developers to work with relational data. In this article you'll learn how to define, create, upgrade and work with LINQ to SQL within your ...

Practical .NET To Think in LINQ If you start "thinking in LINQ" you'll get more done with less code, and what you write will be simpler than using SQL. By Peter Vogel 10/01/2011 Switching to LINQ and ...