I contacted Motorola and Verizon about this issue ... Motorola gave me a 'stock' answer that I've seen posted on the various forums... "faulty proximity sensor, please return" blah blah blah ... I don't want to keep returning my Droid ... I want to customize it and start using and loving it! One thing that really ticks me off is that I end up disconnecting calls when talking with my brother or friends who are using their iPhones ... I can't quite brag about how great this DROID is when I'm constantly hanging up on people!!! Ugh!
VZ said to go to their website, and click "contact us" and email them regarding this issue ... the more people that email with this problem, the more likely it is to be addressed.
I figured I'd mention it so that those of you having this problem had the chance to contact someone and possibly cause enough trouble that this would become a "known issue" because as of right now, it's not considered a known issue by Motorola or VZW according to the few VZW tech support folks I spoke with ...
Here is the answer I received from Moto:
"Thanks for reaching out to Motorola. I’ve reviewed your e-mail and I’m ready to help.
Regarding your concern, we are sorry to hear about that. If the touchscreen keeps working after you close the phone you your face is because the proximity sensor might not be working properly. We recommend you to remove the battery from the phone and to perform a reset. To reset your phone to factory settings and erase all the data on your phone, touch Menu > Settings > Privacy > Factory data reset > Reset phone.
Warning: All data on your phone will be deleted.
If you still experience the same issue, Motorola stands behind our products by offering a one-year warranty issued from the date of purchase. This warranty does not cover physical or liquid damage and is applicable to all the phones that were manufactured for the US market.
You may prefer to check with your carrier for insurance, replacement or exchange programs available with your plan or monthly fee. You may also send the unit directly to Motorola where our technicians will make any necessary repair to ensure a properly functioning unit. Our turnaround time at our National Service Center is 5-7 business days since we receive the unit at our facility. If the phone is determined to have suffered physical or liquid damage, it will be shipped back to you unrepaired."