Hi Reinhard,
Resetting the Defy+ did the trick. Seemingly the Moto update messed around with the device. Never update an adroid without resetting it...
Thanks for your support.
OT: After 2,5 years of various android devices starting with the HTC Hero I'm sick and tired - no sensible backup solution (without root), most of the sync solutions mess Oultook up, updates which make devices buggier than before (Wlan bug @ Galaxy S2) - if there are updates at all, almost no good paid apps, fragmentation ... I just realized that my next device will be an iPhone, a Windows phone or even better a Bott2Gecko phone if Mozilla delivers.