Nathan Grossman at the GWHatchet.com is reporting that George Washington University has canceled next week's Fall Fest appearance by mashup champion Girl Talk. Apparently there were concerns over security and on-stage antics. No word on a replacement act or legal ramifications:

the University cited security and safety issues as one of the reasons for pulling out of the deal. He said GW officials wanted a barricade in front of the crowd to prevent audience members from getting up on stage, a common activity at Girl Talk concerts.