Well, I have a company SIM inside my N900, with fairly strict orders of no data roaming (which as we all know, is almost always insanely expensive).

Just last weekend, I visited Tallinn (across the bay from Helsinki) for a bit of a city tour, with geocaching. I had pre-loaded Google maps for the city center (though this took a long time of "Processing maps") and everything worked fairly well.

Except every few minutes Mappero wanted to do data roaming. I can see how this happens once, with enabling the GPS also trying to use a "supl" location server (either the default Nokia or Google), but why does it keep doing this every few minutes? Is this just how "supl" works?

And there always were three popups about this: "Do you want to enable data roaming?" "No", "Do you want to enable data roaming?" "No", "Select internet connection", "None". After ten repetitions this got to be a bit of a pain

So, two suggestions:
* make sure that once user has said "no data roaming" there aren't repeated popups about this, let's say until the next run of Mappero, if this is Mappero's doing
* add some kind of a progress indicator for the map preloading