Hello VS-Programmer, I have developed a VS program and made it running on Win8/VS 2013. This program works fine on a Win8-laptop. On the SP3 I have 2 problems: 1.) When I move the horizontal scrollbar from left to right I often get dirty vertical lines on the right side (close to the left side of the vertical scrollbar). Not always, but often. I never saw these lines on my laptop. 2.) The toolbar-icons on the SP3 are very small. What is the best way to make them larger?