It really doesn't matter how the image looks in the editor. The important thing is how it looks on your object. But having said that, the "Tiling" option in the Materials Editor affects how the image displays. See below.
The first image has "Tiling" set to 12.0 for both "U" and "V". The second image has "Tiling" set to 1.0. Adjusting this setting will change the scale of the image in the editor, but it will also change the scale of the image on your object. So be aware and use the "Tiling" option in conjunction with a UVW map to get your image to display correctly in both the editor and the object it's applied to.