Fix article sort order bug in umbraco 4.7 website (asp.net)

HI I have an asp.net umbraco based website The site is built using umbraco 4.7 When I sort articles in the backend to appear in the front end, in a particular order, they appear sorted in the backend, but in the front end, they still show in the wrong position. I've made a brief video of what is occurring, backend and front end, and i'm looking for someone competent to work at fixing it. [login to view URL] Ideally, you should have experience with Umbraco (and of course .net) If you have knowledge of umbraco 5.0 (MVC) then please state, This will be a plus for hopefully more projects that we'll invite you to