This is probably a really stupid problem - I have 3 boot partitions altogether (ClassicWB, 3.9 and backup) and each of them has some icons on the desktop. When I boot any of them I don't only get the correct dekstop icons for that partition (as in that partition's .backdrop file), but also desktop icons for all the other partitions - e.g. I have 2x identical ClassicWB boot partitions (primary and backup) and when I boot either of them I have 2x CXHandler, 2x Run, 2x Shell etc. icons on the desktop.
How can I prevent that?