I recently upgraded from 1.2 to 1.5. I followed the upgrade instruction carefully and appeared to not encounter any problems. However, I quickly noticed that the parent categories no longer appears. In other words, the categories are now in one list---the sub category are no longer indented. However, in the categories management interface (categories.php), they appear to still be organized into parent categories and sub categories.
In the sidebar.php file the code:
<?php list_cats(0, '', 'name', 'asc', '', 1, 0, 1, 1, 1, 1, 0,'','','','','') ?>
Any suggestions would be greatly appreciated!