I noticed that the 12-Column Grid Template supplied with Fireworks seems to have a problem in regards to it's gutter (margin) spacing.
If you look at all the other templates, (4, 8, and 16) the gutters/margins between columns are 20px (aside from the outermost gutter/margin on the left and right, which would be 10px). However, in the 12-Column file, all gutters/margins are 10px.
Is this incorrect? I was always under the impression that each column has a 10px gutter/margin to the left and right of it, thus, all the spacing between all columns would total 20px.
The 12 column grid is made correctly, however it is a 970 grid, not a 960 grid like the other templates. This is why the gutter and spacing are equal to 10px.