Snow Leopard’s Column view is often the smarter way to look at your files, but having to drag around your columns constantly to see long file names is a pain. Macworld offers a handy, tucked-away option for fixing Finder’s widths.
Double-clicking on the “handle” at the bottom right of a column will quickly resize the column to fit the widest file name. Holding Option while dragging a column width sets that custom width for every future Finder window. But you can fix all your columns at once with a right-click:
More? Okay. Control (Right) click on a column handle and you’ll see three options: Right Size This Column, Right Size All Columns Individually, and Right Size All Columns Equally. The first option does what I outlined earlier-makes that column the width of the longest name in the column. The second option does this same thing for each individual column that contains items (so each column will be a different size based on the length of names within each column). And the third imposes the widest column length on all the columns.
Seems like the second option would be your go-to in most cases, but the third might be your set-and-forget click if you’re going to be working through quite a few long file names.