how about using the ctrl key and scrolling with your mouse wheel?? i use firefox and IE and doing that the first time has set it for all of the forum. much easier to read on a big screen that way
It's not really about the size of the 'middle' section, it's the ratio between the size of the middle section and the font size of the text. You can, of course, enlarge the middle section to how it used to be, but then the text enlarges to an inordinate size.