QCompass->start() returns false on symbian with qt mobility 1.1.2

My CacheMe project worked fine on symbian^3 with qt 4.7.2 and mobility 1.1.1. Updating mobility to 1.1.2 (as distributed with the latest QtSDK) make the qcompass->start() method return false.

Reverting to mobility 1.1.1 makes everything working again (identical cacheme binary!)

This happens with Qt 4.7.2 as well as the qt 4.7.3.