My Desire has an issue with the calibration of the compass. If I open a compass app and calibrate the compass it works fine until the close the app. If I reopen the app or any other (maps or sky map etc) the calibration is out of whack again. Hunting around on the net it seems I'm not alone but I haven't seen a fix for this issue yet. Anyone else having this problem and possibly solved it?

Cheers
Dave