assuming it's a theme issue i would first try flashing the stock theme template for whatever build your running
Assuming your running 2.1 official here is a link for that:
http://forum.sdx-developers.com/them...-template-zip/
If that doesn't work you can always just flash the official 2.1 again via the sprint updater (or any other ROM for that matter). remember that doing so will wipe everything.