Great, tz1, will try it tomorrow, err, today...
This gps-fix-thing is strange as I started my gps by firing up maemo mapper and nevertheless the gps log was empty until I told kismet to ignore the fix information.
Of course the n810's gps *can* report a fix and in maemo mapper I can see whether there is one or not... In the last days I played around with (lib)gpsbt in python and while I could start and stop the gps and get the position, it always said "no fix"... is there some special way to check for a fix?