I attended this performance on Saturday, the 23rd of June. The orchestra played magnificently, but Maazel conducted it so slowly. I felt that any forward momentum and intensity in the music was ruined by his interpretation. It sounds like the music is in slow-motion at times. After the concert I started chatting with a Julliard student who sat near me, and he felt the same way as I did. I told him to check out the new Barenboim recording or the MTT/LSO performance for a truly exciting M7.
I'm listening to the broadcast now, and I like it a little better now than I did at the concert, but it's still way too darn slow. I'm now remembering that I thought that tempos of the middle movements were OK, and I really loved how he conducted the third movement. It's just that the first and last movements are too much on the slow side for me. It's this reason that I never liked that Chailly M7, and I've always felt that his M7 was the weakest in his cycle.
What's interesting is that I heard Maazel conduct M3 a couple years ago, and I timed the first movement at 39 minutes. Does he always conduct Mahler this slowly?