On a side note, Lacuna Coil's new album is yummy. o.O I don't remember hearing any Italian tracks though, which is weird. Usually at least one per album...
DNC can solo EM to Ts pretty effortlessly once you get Curing Waltz. However, it takes awhile to kill things that hard and with the exp bonus to EP and DCs it's much more beneficial to just chain kill those quickly.
I solo'd dnc as /bst most of the time. Pets are good to keep your kill speed up high enough to chain.
As far as being bored of the game goes, bug random people or use the internet for its real purpose, unless it's a weekend, then it's hammeredtime.