Survey grade GPS trouble (Score 1)

For what it's worth, we have been having trouble with our survey grade GPS the last couple of days. Tracking 9 satellites, we are having trouble obtaining "lock" and our vertical resolution is piss-poor....on the order of 0.1 to 0.5 foot where we usually get 0.02 to 0.03 foot with 9 satellites. The impending war and intentional signal degradation was the first thing that came to mind. Anyone else having similar trouble?