I was struggling to bulk edit my posts to add tags and reassign categories with each search only showing a maximum of 15 items. It was taking me ages to scroll through multiple pages to update my posts. There had to be a simple solution to change this setting in WordPress 2.7. It took a lot of searching to find the hack to fix this, but here it is:
1. Open the file manager in your Hosting control panel.
2. Find the this file wp-admin/includes/post.php
3. You need to find this code
wp(”post_type=post&what_to_show=posts$post_status_q&posts_per_page=15&order=$order&orderby=$orderby”);
Its about the 805th line in wordpress 2.7, line number might be different in different versions, so better find (CTRL+F) the line of code above in wp-admin/includes/post.php
Replace 15 in posts_per_page=15 by some higher number you like, I made it 50.
4. Save the file and exit. Voila, much less work to bulk edit now.
