Version 417 - Menu works like a charm, animation goes from top to bottom (on hover) normally; 

Version 611 upgrade - Menu breaks, Animation starts from bottom to top. (on hover) This is unexpected and breaks prior application functionality; We've tried replacing the binaries from 417 to 611 and back again to confirm this.

http://docs.telerik.com/devtools/aspnet-ajax/controls/menu/appearance-and-styling/layout-of-child-items

Research the ability to have the RadMenu behave responsively.

(On a related thread, there is a wider-oriented customer request for a responsive framework)

In the latest version of the controls (v.2012.3.1205.40 Dev) RadMenu links are not clickable on iPad/iPhone iOS 5.1 or iOS 6.