i also have a problem with the selection, in a different way, but the threadtitle still fits, so i use this thread again... and because my english is waaay to bad to describe it, i show you what it is:

i don't know, but it kinda looks like there is something in the backround, that display the selection in parts. i'm using vista for a week now, so maybe there is something i don't see now (like a said, mabye a program in the backround or something. i've already tried a lot...), but i think it's something else, because directly as vista and photofiltre studio 9.1.0 was installed, i'm getting the problem. and i've also tried photofiltre 6.3.1, but the same problem over there... so i guess the problem is programwise. any thoughts? 'cause DAYUM, that freakin' me out! ^^
...and again: my english is baaaad, i know, so sorry for that. ^^
edit: here, these screenshots explain the problem a bit more: screenshot 1, screenshot 2
description for what you've seen on the screenshots: on the first, i make a lot of selections, to show you, where the "hidden parts" are. and on the second, i moved the window, but the "hidden parts" moved with it.
so, the "hidden parts" are just in the window, not in the hole program. when i move the window, the hidden parts are exactly on the same spots.
oh, and i have to correct me. it's just a problem in photofiltre studio 9.1.0. photofiltre 6.3.1 works fine.