/usr/share/drupal6/modules/ is in drupal6-mod-imagecache 2.0~beta10-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/drupal6/modules/imagecache/
/usr/share/drupal6/modules/imagecache/drupal6-mod-imagecache-2.0~beta10/
/usr/share/drupal6/modules/imagecache/drupal6-mod-imagecache-2.0~beta10/tests/
/usr/share/drupal6/modules/imagecache/drupal6-mod-imagecache-2.0~beta10/translations/
/usr/share/drupal6/modules/imagecache/imagecache.api.php
/usr/share/drupal6/modules/imagecache/imagecache.info
/usr/share/drupal6/modules/imagecache/imagecache.install
/usr/share/drupal6/modules/imagecache/imagecache.module
/usr/share/drupal6/modules/imagecache/imagecache_actions.inc
/usr/share/drupal6/modules/imagecache/imagecache_ui.info
/usr/share/drupal6/modules/imagecache/imagecache_ui.install
/usr/share/drupal6/modules/imagecache/imagecache_ui.module
/usr/share/drupal6/modules/imagecache/imagecache_ui.pages.inc
/usr/share/drupal6/modules/imagecache/sample.png
/usr/share/drupal6/modules/imagecache/tests/
/usr/share/drupal6/modules/imagecache/tests/imagecache_create_url.test
/usr/share/drupal6/modules/imagecache/translations/
/usr/share/drupal6/modules/imagecache/translations/de.po
/usr/share/drupal6/modules/imagecache/translations/fr.po
/usr/share/drupal6/modules/imagecache/translations/ja.po
/usr/share/drupal6/modules/imagecache/translations/nl.po