Ivana,
I feel even more stupid now after writing you personally about insurance. I just skimmed over this thread - had I spent a few seconds longer, I would have easlity seen you were Dutch and well aware of bike insurance.
For those Americans reading this - you must visit the Netherlands. I've lived here for eight years and still get a kick from the bike paths. I've even seen cloverleaf intersections for bikers below street level. The only down side to all of this is theft. Since this really is a bike country (more bikes than people), thieves have a field day.
I've had two bikes stolen within the last year and only the last one was insured. If I would have had both bikes secured with a cable, I would not be writing any of this.
Ivana, I hope you get your bike back. Batavus started an indentification system which is a step in the right direction, but the police have to take an active role to make this work.
DH