Dynamic UpdateProgress Control
Jamie Pompu has spent the last week playing with the UpdateProgress control as part of the Ajax Extensions. For the most part, the control itself is quite nice to use but, there was one thing that he found to be a real pain;h e could not get the control to hide an area of a page while it was activated. Although this sounds trivial, it got to be a real pain trying to find areas in his page design that would lend well to an UpdateProgress being displayed and still be intuitive to the user what was happening.
If you have struggled with this already, you know exactly what I'm talking about. If you have not, I'm sure you will. This control will save you a lot of headache.