In the demo ODataDataSource - Filtering, Sorting and Paging with RadGrid, the paging does not work as expected. The page size can be changed, but it does not "stick" as you move between pages. For example, change the page size to 10 and move to the second page and you will find that while 10 is still the page size shown on the grid, that 20 rows are shown.
I noticed this bug in my own code and traced it back to how the demo worked. I have not yet solved the issue (despite the fact that it looks like there is an easy fix when you examine the code). Can you provide any guidance on this issue and then get the demo fixed so this bug doesn't spread all around the internet as people copy the demo code? Thanks. :)