Thanks themib. Hardware problem is definitely possible - after all, it's an Ebay phone
Before I go mucking up my (currently) good root by installing Bootstrap, let me ask a couple more questions. I bought the Droid X version of Bootstrap, but I've seen other threads where people install the D2 version. Does it make a difference, if so which is better for the X? If I have Bootstrap, I don't need Rom Manager, right? Does Rom Manager substitute for Bootstrap, or no?