Anyone Else's 3G Been Shitty Lately?

The past couple days the 3G for our precious iPhone has been way wonky, but only in certain areas of town. It's working completely fine on the Hill, but as soon as we cross into Downtown--pretty much as soon as we get past the Paramount--we can only access our internets on AT&T's not-as-fast EDGE network. We also experienced this problem yesterday at the SIFF launch; in the Seattle Center campus, 3G worked just fine, but once we got out into Queen Anne proper, the network went down. We haven't ventured into the heart of darkness today, but we've heard others have the same issue, though coverage on the official map looks just fine. Anyone know what's up?