Images: height and width paramaters have no effect

I have inserted a picture in my text and set the height, width and alignment. The preview in the CKEditor window gives me changed size. However, after saving the message, the parameters have no effect.

I have looked into the code and saw that they are put into the 'style' definition. When I delete that definition and insert the old-fashion way (as attributes width, height and align of the img) then the image is sized and aligned properly.

I cannot recall having these kind of problems using FCKeditor.

Info: Drupal 6.15, Pixture Reloaded theme, latest CKeditor version and module.