I tried to put a "wp_list_cats" line on one of my pages, and for some reason, the page didn't execute it; the code is visible instead of the category list. This is what I put in the body of the page:
<h2>< ?php _e('Category-based'); ?></h2>
<ul>< ?php wp_list_cats('sort_column=name&optioncount=0&exclude=1&hide_empty=0'); ?></ul>
<h2>< ?php _e('Date-based'); ?></h2>
<ul>< ?php wp_get_archives('type=monthly'); ?></ul>
Thoughts? When I try a different "list cats" tag (one that I'm not using in my sidebar as well), the same thing happens.
You can see what it looks like at: