Forum Display Order - I think I'm submitting too much data. Goes to white page. Help?

[_Ryfe_]

Ok this is a huge board with a ton of forums. I want some of the forums to be in alphabetical order. However, there's so many that I think PHP won't send that much data to update all the forum orders at once. It's like it's timing out. Is there anyway I can set vB to send as much data as it could possibly need? We have a good server. When I submit the new display orders, it just loads a blank white page and the display orders become jumbled. I definitely would like to fix this. I've already had to update the max ammount of information the forums can hold from like 8 up to 22mb's because we have so many usergroups/forums.

Any help is appreciated.