I asked This Question In Support Forum Of Wordpress.org But No body Answer It!: I have a problem with Thumbnail Pictures in wp 2.6.1, This is my Miscellaneous Settings: http://i37.tinypic.com/2qc2h5d.jpg And this is the out put of my Thumbnail pictures in index page!: http://i37.tinypic.com/30at17p.jpg in every post, some pictures are not Thumbnail in their size! what do you think about it? why Some Thumbnails in index page sometimes are not in their sizes?