How to show a block on a set of subpages except one of them? I have a block which is shown on all subpages under "mypagename", using the following bmock visibility settings: 

Only the listed pages --&gt; mypagename/*


Except I now need to exclude one page under "mypagename" for showing this block. Is there a way to easily exclude this page using the standard settings of Drupal 7?
There's nothing in the core UI, no.
hook_block_list_alter() exists for exactly this sort of scenario, though:

Act on blocks prior to rendering.
This hook allows you to add, remove or modify blocks in the block list. The block list contains the block definitions, not the rendered blocks. The blocks are rendered after the modules have had a chance to manipulate the block list.

e.g.
function MYMODULE_block_list_alter(&amp;$blocks) {
  if ($some_condition) {
    // Remove the block from the list.
    unset($blocks[$some_key]);
  }
}