From what I can tell, certain UTM zones are working, while others are completely out.
As of 12:47 MST, 11/26/06
Outage by UTM Zone:
10 - no (west coast)
11 - yes
12 - yes (az)
13 - no
14 - yes
15 - yes
16 - no
17 - yes
18 - yes (east coast)
19 - no (maine)
So it appears less than half the country is experiencing problems at this time. Remember that if you already have looked at maps in your area, you've got them because they are on your hard drive.
We'll keep checking on this....