Hi

When i go to admin/content/taxonomy/taxonomy_image drupal stops breathing.
In taxonomy_image_overview() function there is a cal to taxonomy_get_vocabularies() and then naive attemt to just go over all terms in all vocabularies:

  foreach ($vocabularies as $vocabulary) {
...
    $tree = taxonomy_get_tree($vocabulary->vid);
...
foreach ($tree as $term)

And where is a pager ??

Well, taxonomies can be very large and even huge... in my case it holds tens of thouthands of terms.
Please add more salt to your module to make edible.
thanks