When i woke up this morning I am experiencing the same problem you describe.  I have no 3G connection and when i do it immediately drops to 1x.  Sometimes I also have no reception at all throughout the day.  I called verizon rep and they said that the towers in the area are having some sort of problem.  I'll wait 24 hours to see what is done and if nothing then looks like ill be making a trip to my local verizon store for explanation.  My wifes phone just started doing it tonite also with no 3g connection or internet at all.  Grrr we pay good money for something we should be able to use at all times!  Goodluck and let me know if you get answers and ill do the same