Non-rooted Droid X. Since the OTA Gingerbread update, my phone will stop dialing or sending texts. If you go into dialer, put in the number and hit "send", the phone just returns to the home screen with total time of call 0... Same thing happens when trying to send a text - in handcent, a red x appears saying it was undelivered.
As I mentioned, a reboot fixes. However, it occurs again in a day or two.
Some apps that I have loaded that are worth noting are: Handcent, Launcher Pro Plus, Tasker, Pandora...
I am on my wifi most all the time while at the office while docked to my pc via usb.
One suggestion was to put into airplane mode and take out but that did not correct.
This is frustrating as it seems to always happen when I am in a hurry and need to make a call!