Unable to see posts and categories in wp-admin

So, are you still on the same server or have you moved? If you moved, did you do a backup of all your files and then uploaded them to the new server?

I am on the same server. I tried 2 different SQL backups with the same result. Before all this even happened my website was running REALLY slow due to the fact that I have 50,000+ categories, so everytime I did anything where it showed categories it would take 5 minutes to load the page. I added my own php.ini with 500mb limits on everything, but when the host said that I was using too much cpu I deleted the custom php and now that is what happened. The dropdown menus with the categories is what really hurt me, loading 50,000 categories is obviously a lot of memory. But now Im f^&ked because I can’t do anything with the site anymore.

It basically stops loading before the page is done loading… here is the end of each one:

on add new post, the html ends at:

<div id=”category-all” class=”tabs-panel”>
<input type=’hidden’ name=’post_category[]’ value=’0′ /> <ul id=”categorychecklist” class=”list:category categorychecklist form-no-clear”>

on categories, the html ends at:

<tbody id=”the-list” class=’list:tag’>

on show all posts, the html ends at:

<option selected=’selected’ value=’0′>Show all dates</option>
<option value=’201108′>August 2011</option>
<option value=’201107′>July 2011</option>
<option value=’201106′>June 2011</option>
<option value=’201105′>May 2011</option>
<option value=’201104′>April 2011</option>
<option value=’201103′>March 2011</option>
<option value=’201102′>February 2011</option>
</select>

and on my frontpage, the top categories widget wont show at all, it just kills the rest of the html also

The only weird thing is that I have just as many tags, but I have no problems with seeing all the tags, only categories.

I am also getting core dump files in my root and wp-admin folder when I try to access these pages.