JEANNETOURETTE  Who is straycat? Thanks to her so much, it works also on 10.6.: sidenote pops up even when an app's window is filling the whole screen, but in exposé/spaces, no annoying white window is seen!

now it is the way it should be (IF it keeps the content of my notes safe - in the past sometimes the frontmost note's content was empty after a restart of the computer, i had to restore from time machine, losing always some recent notes. but this hasn't happened for a while - maybe because i use the force-save option always now!?)  
(Version 1.7.3)