Hi, I'm having a very similar problem with making the 3 column blog page display 3 columns, currently I have all the options configured exactly the same as in the demo (number of columns 3 and all the other options the same etc...) but it displays the articles all stacked up on the left hand side filling up one column of the 3 columns. In other words there is nothing in the 2nd and 3rd columns.
Any help here is very much appreciated.
Thanks!