Intermittently, when I right click to get the format dialog box to format one or more cells, I only see the outline for the dialog box and the heading. The various options such as "add a row" are not visible, yet if I click where they should be, I suddenly see the option. If I then click below where it says OK, the formatting works perfectly. I am using a standard color scheme and have tried different color schemes to no avail. I have never seen this problem in any earlier version of Excel and I can't figure out why this is happening. I am using Win 7 Pro 64 and Excel 2007.