Here is something very peculiar I have run into using Filemaker 11.
My MarinaPro solution displays normal at screen resolutions 1366 x 768, 1360 x 768, 1280 x 768 and 1024 x 768 when FMP 11 is running on a standard PC under Windows XP, doesn't matter the brand computer or LCD monitor. Zoom level using "Enlarge Window" mode is at 100%.
However, when MarinaPro runs on a new Dell Vostro 3500 laptop running Windows 7 at the screen resolutions outlined above, the content area appears altered at Zoom level 100%, and the screen content actually appears to be at about 125% to 150%! And, the zoom level using "Enlarge Window" mode is still at 100%.
The same thing happens with "Normal Window" mode when set in Filemaker Preferences.