Well having owned my Ducati 916 since 2008 i have had a few problems with her and all have been very silly electrical faults, touch wood, the mechanics of the bike are perfect. The electrical parts can be expensive and very time consuming to fault find. I service it and change the cam belts every 2years which cost's me about £130 in total.

But Ducati's do have a problem with the engine paint flaking off, i know of people who have had engine case's replaced under warranty because of this.

However having said that, everytime i swing my leg over her and start her up i get the biggest smile ever, riding her around chucking it into corners the acceleration, braking even tank slappers are the best fun to be had on a bike and i wont ever be parting with her. And anyone put of by ducati issues should just take one out for a ride and then see if your opinion has changed.