The drums were the other Umber (the one not with the Boltons), who the Iron banker tells Asha he came across when looking for Stannis. He says he was camped out in front of winterfell banging the drums waiting for Stannis.
So I jsut finished ADWD. After watching the show on HBO, I bought all 5 books and read them back to back like they were crack. I loved it, and I am in withdrawals now. If I have to wait 5 years for the next book I will lose my fucking mind.
I enjoyed the second book the most, and the 4th the least, but all of them were vastly entertaining. I did have some issues with the books though. I disliked George's tendency to go on and on and on and on and on and fucking on about the food people are eating. Sometimes it felt like half the book was just lists of ridiculous meals being consumed. And I thought some of the big deaths could have been handled better. Robb Starks for instance felt "shocking for the sake of shocking" to me. As if he decided he didn't know where to take the character and just wanted to kill him off in a way that would make the reader gasp (which I admit I did). I'm not 100% sold on where he took Brandon's story, and I got really tired of Tyrion's story being so all over the damn place. And if Jon Snow is really dead...fucking bullshit. To me he is the "hero" and in my mind I saw him being the central character when all is said and done, the man who saves the realm when everyone else stops fucking around and realizes the others are the real threat to the realm. If George really did jsut kill him off, I find myself struggling to think of another likable character to get behind and support. Dany still has potential if she stops fucking around, gets on her goddamn dragon, and starts fucking shit up. Her story in ADWD pissed me off. The beginnings made it seem like shit was about to go down. Her nephew was going to show up with Golden company, Quentyn with Dorne's support, Tyrion to be an adviser and teach her about dragons and advise her on war, the Maester Sam talked to would show up to offer council as well...it seemed like shit was going to get interesting...instead we got half a book revolving around obnoxious and unlikable characters whom I couldn't even keep straight half the time while Dany got whinier and whinier. And the Daario thing was ridiculous.
Still...I liked it, and I am dying for more.