Sometimes no gps for hours

[yogi01]

Today I have no gps again. Locating only by gsm antenna.
It happended two weeks ago for the first time. After some hours, gps came back. Restart didnt help.
Any suggestions?

 

[anon(9435020)]

I don't know about you, but I live close to a military installation so this happens quite a lot for me. Very annoying.

 

[yogi01]

No, this is not the cause in my case. It happened at two different places.