Entity Framework delayed when call SaveChanges

I'm using Entity Framework 4 with Ria Service. I have a problem with it, that is when I call SaveChanges it does not submit those changes to database yet, it take a while (which I'm not sure how long does it take) before it actually write that data into the table.

I want to know how can I configure entity framework (or wcf ria) to write data immediately af开发者_C百科ter I call SaveChanged()

This is not a bug on Entity Framework. As far as I can remember it was because I had a trigger on that table.