I noticed 2 glitches:System Settings > Window Behavior > Translucency > "Use translucency/shadows"
1) Desaturation-effect after pressing Ctrl + Alt + Del (logout), blanks out the whole screen first (instead of just drawing the desat gradient)
2) The window shadow interferes with the "menu drop shadow" effect in:
(the menu shadow will have its own shadow. looks strangeSystem Settings > Appearance > Style > Effects > Menu drop shadow
