for sake of including this in the discussion - I took a look at the national charts for Last FM for last week (September 30 - October 7):
1. The Beatles - 71,978 listeners | 830,175 plays
2. Radiohead - 68,904 listeners | 805,049 plays
3. Red Hot Chili Peppers - 63,947 listeners | 487,228 plays
That's before the album came out. I guarantee you that Radiohead is number one this week, far and away. This at least provides some gauge of whether or not my grandiose "stopped to listen for an hour" statement was at all true.
And for the record, U2 did not make the top ten. In fact, U2 came in at number 22. Right behind the Smashing Pumpkins at 21