Ado.NET EF 4 CTP Code First Bug - My fault or EF4's problem

Today, I've tried to build a new membership provider and role provider using ADO.NET Entity Framework and Code First approach, so that I can use it for SQLCE4, MySQL, SQL Server... Everything was fine until I opened the database and see the tables' names, they are not as the same as what Scotgu said on his blog.