Sounds like what we have been experiencing the last few days in So. Cal (orange county). After about 3 days of this, finally got better yesterday. Maybe they are updating the towers, getting ready for the MR2 OTA?
In the Woodlands (just north of Houston), my data has been completely off most of this morning. It keeps teasing me with a quick 1X, 3g, 4g in the status bar, and then it's gone. This is supremely annoying.