Last Night the Famed Summer Concert of NYC ,'Summer Jam" was rocked but the reunion of 50 cent & G-unit. But that wasn't the only thing rocking. Artist Slowbucks was jumped on stage and robbed for his gold chain because of apparent beef between him and 50. Sources say this is due to Slow taking photos with 50's child at gradation and involvement with other rappers who 50 is not so cool with. Both from Queens , Southside and Northside have been known for many years to always be at odds.