Please see the following two links. I'm having this issue on my Maxx HD after upgrading to JB and it's driving me nuts. The screen sensitivity mainly occurs after I hit the Recent Apps soft key and then select a running app. This occurs at totally random intervals and is clearly a software issue. Anyone else experiencing this? I had no such problem previously with ICS. I'm stock, non-rooted and running Nova Prime.
http://forum.xda-developers.com/showthread.php?t=1576739
Issue 29734 - android - 4.0.4 touchscreen sensitivity irregularity - Android - An Open Handset Alliance Project - Google Project Hosting
http://forum.xda-developers.com/showthread.php?t=1576739
Issue 29734 - android - 4.0.4 touchscreen sensitivity irregularity - Android - An Open Handset Alliance Project - Google Project Hosting