Phone is resetting itself?

[bweave]

Hi...I've had my rhyme for about 2 months now. I don't have a lot of things downloaded on it. Within the past few weeks, when I hit the home button, my phone seems to be resetting itself. It goes back to the white HTC screen, clock goes back to 00:00, and boots itself back up. I noticed it after I started playing hanging with friends. I'm not sure if its a coincidence, but I noticed it started happening after I downloaded hanging with friends. But its now starting to happen even when I'm closing text messages and stuff. Does anyone have any idea what it might be?  Thanks in advance for any help!