General :: Android Phone Does Not Respond After Ending Call

I am using commitva z71 category phone. (motorola quench xt3 xt502).

I had been using cyanogenmod roms on it. presently i have CM 7.1 EAV 7.2. The roms usually came with ADW launcher as default. But one problem I have been facing is that some times my phone does not respond to press of any button, not even power button after ending a call. The screen however goes off and does not light up.

I have to either remove the battery, replace it and restart or I have to make a call to my phone from another phone. When I give a missed call, the phone gets activated. But when I press Menu button, it brings up the keyboard instead of Menu.

This problem has been persisting whichever version of CM Rom I have been using.

The problem aggravates when I use Go Launcher as my default launcher by using Launcher Switcher. When I use ADW as default lanucher but have Go Launcher also on my phone, sometimes the defaults are cleared and I am asked to choose the launcher to finish the task of closing phone app.

Initially, I thought this was the problem of default phone app. So I tried dialer one from play store, but to no avail.

Is there a way to delete the ADW launcher that comes with the custom ROM?