Unfortunately, I was not able to find the RadSlider control in the website, to which you provided a link in your last post. Additionally, the link to the beforerefresh.bmp seems broken.
Could you please open a new support ticket and send us a running project that demonstrates this problem as well as detailed steps we need to follow in order to reproduce it - e.g. which page should we open, how we should refresh the page (F5, button click etc.)?
the Telerik team