Well, this is what I faced on one of my wordpress blog hosted on yahoo server. It was running 2.1 and suddenly yahoo auto upgraded it to wordpress 2.8.5.
After the sudden upgrade, it was very difficult (nearly impossible) to make new posts. The browser was freezing. There was 1000s of “custom fields” on the page which was taking long time to load and in turn was making the window unusable.
I started searching on web for the possible solutions but was not able to get any concrete one. The problem was there even after upgrading it to 2.8.6. I was however able to make the post by forcing the window to stop page download in between.
I was finally able to solve the problem. I am sure it is not the correct way of doing it but I am now able to make the posts without any problem.
If you have a similar type of problem then:
Lookout for this line “add_meta_box(‘postcustom’, __(‘Custom Fields’), ‘post_custom_meta_box’, ‘post’, ‘normal’, ‘core’);” in “edit-form-advanced.php” which will be there in wp-admin folder.
Comment this line like below:
//add_meta_box(‘postcustom’, __(‘Custom Fields’), ‘post_custom_meta_box’, ‘post’, ‘normal’, ‘core’);
Upload the file to the server.
This is going to solve the problem temporarily. However, you would not be able to see “custom fields”.
If anybody has any better solutions then do let me know.