I'm from Dunboyne(living outside it now but moving off to Cavan soon). Dunboyne is a good spot, as col said there are some teenage problems, but you get that everywhere. There's alot more to do there now than when I was growing up!
The flooding issues were in around Castleview and Beechdale, but alot of this has been sorted with the flood works done on the river over the past few years.
Hth,
Deb