I've held this (stupidly) since before we got Fukishima'd. I did take advantage of the low PPS in 2012 though because of the vast amount of resources DNN has access to and for the potential of Cameco, RIO or ??? buying them out.
at this point though... I still don't see a buyout in DNN's near future.
as stated... until U308 climbs and stays over $50 don't expect much from DNN or any other U miners. a good play I made $ in before Fukishima was URA because of it's composite of a large group of U miners. I don't have any URA at the moment but if U reaches that $50 mark and it holds I'll consider jumping into it again. the best two U companies out there to invest in are DNN & CCJ