Ok thanks, that was it.
If I change any uicontrol's (edit box) properties after I've changed its pointer (I have done a calendar of which days are edit boxes and I want its hover pointer set to default arrow and not |), it seems to malfunction the setCursor.
What I want to know is if an uicontrol's propeties are being constantly changed do their setCursor property reset to default or I just have to change it once.
Summing up, what I want is to change a calendar's edit boxes days pointer to the default arrow.
First of all, thank you for all your contributions. I've read you a lot.
I can't get the fidjobj working on R2012b, it returns me always 
>> hButton = uicontrol('string', 'Hello');
jButton = findjobj(hButton);