I've had my N9 for a few weeks, and of course it's great

Except for the GPS fix - the fix is obtained quickly but it's unreliable. When I navigate I frequently get a "GPS signal lost" message, and it quite often takes a few minutes until the signal is restored.
I tried a speedometer app and found a similar experience, worked great and then dies for a few minutes at a time.

I've completely reflashed the device, that seems to be common advice. Has anyone had similar happen? I might have to take it into Nokia Care but I don't really want to be without it while they investigate...

I have recently used the Drive app for a 3 hours long trip, and after waiting a couple of minutes for the initial fix I never lost signal. I drove with the phone connected to the charger: maybe your problem is a power saving issue?

Just an idea.

At the moment I only have a crappy 500mA charger in the car but my feeling is it's not a power issue.

Well, into Nokia Care I go me thinks...

Def. play with power profiles, he might be onto something there.
It's possible it's not getting as good as signal as possible, because of power management.

Doubt this would have any impact, but maybe try...
http://talk.maemo.org/showthread.php?t=80287

Were you outdoors? Clear line of sight to the sky? Cloudy day? I had a similar issue a few days back but turns out the N9 didn't like where I put it in the car... changed spots and back to good GPS for hours again.

I've experienced similar, dropped every once in a while and took about 2-4 minutes to get another fix, and its more frequent if i have Bluetooth connected in car. Had to clear device recently and have not gave it a try, fixing to go for a drive tonight so will give this a check if it changed anything after a restore.

Should try a different spot in your car if possible. The spot on my dashboard with a conveniently sized slot that fits the N9 is also the only spot in my car that strangely has a GPS signal black hole; placing the phone anywhere else results in perfect signal full time. Strangely though, closing Maps/Drive and reopening it (even in the black hole slot) results in the GPS lock being reacquired with no problems.

glad to say i didn't lose any connection this time.

Thanks for the suggestions all.

I've been driving in nice open spaces, I don't live or work in the city. I have my device mounted on the dash and it can see the sky.

I've tried switching to the Google server, although the Nokia server has better pings where I am. That didn't make a difference.

That's interesting @somedude re the bluetooth connection, I have it permanently connected when I'm in the car. I might turn that off tomorrow and have a go.

Just out of interest, I might try disabling the A-GPS. I'm travelling overseas in a few weeks and I won't be using the A-GPS to avoid roaming costs.

I've experienced the same thing.. Driving down the freeway (totally flat plains) and all of a sudden it'll jump all over the place and sometimes it lasts for 2-3 minutes. Frustrating for sure as every Nokia I have ever had has been perfect as a gps..