Depth of Sub-Forums displayed in the main forum list

[globalstrata]

Hello guys/gals,

I have been trying to display many up to three levels down of sub-forums but I have been having problems doing so. I have gone to:

Admin CP -> vBulletin Options -> Forum Listings Display Options -> Depth of Sub-Forums

and put 4 as the input but it seems like it is not displaying the sub-forums under A-F subforum (Please see the following link: http://forums.origanime.com/forums.html) Since I have installed hacks in my site, I need to find out which code controls this so I can check if this has been modified by any of the hacks. Can any one either tell me what am I missing, if there any other area in the admincp that I should look at or what code should I look at?

Thanks,

Gladys