According to the December 6 '06 Toledo Blade, Bowling Green State U. is investigating possible hazing.  Pledges of Kappa Alpha Order  were found outside covered in paint and being yelled at.
http://toledoblade.com/apps/pbcs.dll...EWS21/61206011
The article reports that the chapter president said the pledges had signed waivers of liability and were participating voluntarily.  
I'm not a lawyer, but maybe a member of the Ohio bar or someone extremely familiar with Ohio law could  answer a question or two.
Ohio law seems to me to say that consent is not a defense to charges of hazing.  Does that mean that the  "waivers of liability"  are not worth much in an instance like this?
Ohio law:
http://www.stophazing.org/laws/oh_law.htm