It seems like a good amount of bloggers are experiencing the WordPress “mm_handled” error, which triggers when you want to write a new post. What happens is that the custom fields section shows mm_handled over and over again. There are hundreds of mm_handled fields to fill out and for some people this prevents creating new posts completely. On the other hand, for others it extremely slows down posting. It is hard to say why this happens, but so far there are at least two things you can do:
• Use Firefox, as at least you can create posts, but unfortunately posting is slowed down. While this is not really a solution to the problem, it will allow you to publish a important post without taking more drastic steps.
• You can reinstall WordPress. This should fix the problem, as it worked for many people. On the down side, this will take you some time and don’t forget to backup your database or any template changes. I cannot offer any easier solution, but if you think that you have a better idea please let me know by commenting.
I know that those who experience this problem might be feeling really lazy when it comes to posting, and that is why this error should be fixed as soon as possible.