Price action is strange....It could be Monday Merger
CSCO is VERY unlikely to make a bid for RVBD. Besides reasons of product dvelopment plans etc., CSCO, rumouredly, simply do not have enough cash inside of US to make a bid. If they try to bring in cash, they will have to pay hefty taxes.
Wouldn't rule out that possibility. It has been under heavy accumulation past six months. Oracle could also make a play here.