The screen on my phone always comes back on after I make or receive a phone call. Once I hang up and turn the screen off, it always comes back on with the Keyguard on after about 15 seconds. This never happened until a few weeks ago. I did install the Shadowmite ROM, but I'm not sure if that caused the problem.

Has anyone else seen anything like this, or had this happen to them?
This is starting to get very annoying.