I have three update panels in my page (they are not nested). One contains a menu, the other some buttons and the last contains a range of controls.
The third update panel (with the range of controls) works fine, but if I click a button or a menu item in either of the other panels then the they all stop working (fail to respond to button click events etc..)
If I remove the update panels then these problems go away, I just loose the functionality of the update panels.
I don't think I'm doing a great job of explaining my problem so I will give a specific example;
I have an update panel with a label showing some text, the user can click a button inside the update panel called "More" to show more of this text, then click a button called "Less" (also inside the update panel) to hide it again. The first time I click a button that button works, but any further clicks to either button does nothing (the button_click events do not seem to get called). Furthermore, other parts of the page stop working (e.g. other update panels). The page has not crashed because if I click on a menu item from my side menu I am navigated to a different page, I can then return to the page and repeat the problem. The parts of the page that continue to work are from the master page, the bits that freeze are all in the content page.
I have even added a button to the page that does nothing, if I click it nothing happens (obviously) and the rest of the page continues to work OK, but as soon as I place this button inside a new update panel (inside it's content template) everything starts to go wrong as described above.
Help please, I'm wasting far to much time on this already.