In just this past week I've also starting having this problem with the touch screen. A friend of mine has also started having this problem and I've found one other post here that sounds similar. As far as details go: I've kept my phone in good condition, have relatively few apps and few other downloads. So a couple days ago I brought my phone out of sleep mode, and tried to unlock it with the slide on the touch screen but it was completely unresponsive, the slide didn't work, the sound-off slide didn't work, nor any of the home/menu buttons at the bottom of the phone. I could still access the phone options screen with the power button, and navigate that with the keyboard cursor.
I turned off the phone and did a soft restart by pulling the battery out. That seemed to fix the problem temporarily, but it seems that the longer the phone sits in sleep mode (or even in clock mode on my dock) the more likely the touch screen problem occurs. Luckily, it seems that all I have to do now is turn the phone off for a while.
The only conclusion I can come to is that there was a recent update of either Droid software or, if its possible, some other app that has interfered. I'd, of course, prefer not to have to do the hard reset option. Anything the admins can do to help would be great.
