If you check the Rating demo page at: http://demos.telerik.com/aspnet-ajax/rating/examples/overview/defaultcs.aspx
you find that the controls works as expected. As it was mentioned in a previous post, if there are some visual glitches in the controls, most probably they are caused by a custom CSS which break the controls layout.
With only image provided, we can not tell what is the thing that causes the problem in your case. To be able to give some futher help, we will need a simple sample project with the issue reproduced, so we will be able to test it on our side. A live URL will be also an option to test the issue.
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to the blog feed