Hi, I'm using current LyX-cvs on my Mandrake Linux 7.2 PC. Large black areas are left on the text-canvas, when I do the following: (this is just as an example) - Click on Edit->Math to pop up the Edit menu list and the Math submenu list. - Then click somewhere so that the Math submenu disappears, but not the Edit menu list: click on an Edit-><separator> for example - The space on the LyX canvas that was overlayed with the Math submenu, is now black. - By opening and closing this way more submenus and closing them, I keep creating more such black areas on the LyX canvas. - Only after the Edit menu list is gone, also the black areas will be cleaned up (repaint of the canvas). - Well, only the text area of the LyX canvas is repainted, not the 'command margin' at bottom of the window, nor the scroll bar at the right; these two still show black areas. An older version of LyX (1.1.5fix1) doesn't show these black areas! Any idea what causes this? Rob.