I have aboue 250 categories and I had no issues with WO 1.5
Since I upgraded to 2.0.2, the write/edit post page (i.e. post.php) does not display all categories.
It shows most categories, but some are simply missing.
When editing a post that is already in a missing category it is not visibly marked as belonging to the category - I have checked and the HTML for the checkbox is completely missing. However saving it again with alterations does not move it out of the category.