I've been having problems with losing GPS lock. I've had it showing 8 satellites and then only 10 seconds or so after taking off it can drop to 5. It seems to happen more at lower altitutes (<100') but I have had it happen later on in a flight. Once I saw it rapidly going from 8 to 7 then down to 5 then 6 then 3 all in about 30 seconds. I'm afraid to go in any wind because its so much harder to control when it loses lock. Any suggestions?