Custom block removes ALL

Below is my block hook... I have used the exact same structure for all my implementations of hook_block(); and lately in my last three installs every time I implement something similar to below ALL blocks do not display, I stepped through some of the code and it seems like they are being built properly...

Regions are correct and displaying when the code below is not present. When I switch back to Garland and place the block created below, it shows up fine and so do all the others. I am clueless!

function ostrf_block($op = 'list', $delta = 0, $edit = array()){     
  switch ($op) {
    case 'list':
      $blocks[0]['info'] = t('OSTRF - Newsletters'); 
      return $blocks;

    case 'view':
      $block = array();
      switch($delta){
        case 0:
          $block['subject'] = t('Newsletters');
          $block['content'] = 'test???';
          break;
      }  
      return $block;
  }
} 

on line 715 in blocks.module "return $blocks[$region]; " is populated, and then the chunk directly after is

  if ($list = block_list($region)) {
    foreach ($list as $key => $block) {
      // $key == <i>module</i>_<i>delta</i>
      $output .= theme('block', $block);
    }
  }

$list should be populated just like $blocks[$region]; was, but its NULL !!!! wtf? then I ran the debugger again on Garland, and $list is populated!!