Yeah I know that and that is very nice feature. But i don't like default size, so i am looking for way to set default size or something, because i don't like resizing every time when new icon is created.
However, I think I have worked it out: * I installed Nautilus (I don't know if this is a pre-requisite - try without first) * Open File Manager * Edit -> Preferences -> Views * The 'Icon View Defaults' setting will then change the settings on the desktop as well as for the file manager.