WP 2.6.2 Fatal error memory size exhausted post.php

I’m clicking on Manage -> Pages in my admin panel and I’m getting this message:

Fatal error: Allowed memory size of 94371840 bytes exhausted (tried to allocate 32 bytes) in /home/.havoc/user/example.com/wp/wp-includes/post.php on line 2934

This occurred after I did two things:

First, I upgraded to WP 2.6.2 from WP 2.6.1

Second, I imported a large number of pages

I also noticed two other things:

1. Some changes were made to the post.php file per the 2.6.2 upgrade.
2. Sometimes when I click Manage -> Pages, instead of the error message, I’m redirected to my 404 error page.

I’m totally lost, please help!

Thanks in advance!