Song length doesn't bother me. I'm a fan of Dream Theater, and a long 25 minute song (In the Presence of Enemies) is just perfect.
I love the new Iron maiden. 4 songs over 10 minutes, and others around 7 minutes. It's great.
That said, I do like a solid album with songs all around the 4ish minute mark. Example, the excellent new Tremonti album. Hard Rocking, variable, and only one long 7