Nope, you're not the only one, I'm going to be up to 5 very shortly here.

1st (lasted 3 weeks)- Earpiece stopped working, home key was raised so far I almost ripped it off taking the phone out of my pocket
2nd (lasted 3 months)- Hardware keyboard stopped working one day
3rd (lasted 5 weeks)- Data stopped working, Sprint couldn't reprovision, offered to replace
4th (lasted 3 weeks)- Hardware keyboard died over a period of 4 days. This one is my current, and I'm calling customer support AGAIN to get this replaced.