Can't generate new usergroup

[Özgür]

My friend have 197 board in our forum. I try to add new membergroup, but even if try to check in "can see boards" to "check all" membergroup can't created and page go to timeout. Is this a known bug or what is your suggestion on this? 

[Arantor]

The problem is that there is only a fixed amount of space you can actually use for listing membergroups against a board.

You will need to modify the boards table in order to change this, using phpMyAdmin. Once you've taken a backup, we'll go through how you change it. Though in reality unless you have 500k posts, 197 current boards is probably too many.