My Droid X suddenly began to behave strangely. I could dial out, but as soon as I put my phone up to my ear the phone would disconnect and return to the locked scren. No problem if I used speaker phone. Our friends at the local VZ store were able to replicate the problem. Dial the number - hold phone vertically - cover up sensor that turns off the display while you talk - bingo!! - phone shuts down and goes to locked screen. The fix? -- Remove the battery booster program (that may not be the correct name). Now all is back to normal. VZ also suggested that I remove the Lookout virus prevention program as that program is always active and can slow down other apps. I removed Lookout and the Playon program that would only run a few seconds before locking up in "buffering" mode now runs just fine. I guess tha moral here is something you all know and I am just beginning to learn -- open source programs such as we have with Android may well cause "interesting" problems.