[Steven Zahm]

@ B. J. Hanneman

My first guess is that the memory assigned to PHP is getting exhausted. Try increasing this. Here’s is a link to a blog post which explains how.

http://dailyblogging.org/wordpress/increase-wordpress-memory-limit/

Different method work for each host. I suggest starting at the top and working your way down the list. I suggest 128MB.

Hope that helps. Let me know.