WordPress editor image resizing doesn't work

You manually resize a picture in the Wordpres WYSIWYG editor, but the picture keeps its original size when you view the post.

The problem is in the CSS. Check you theme (twentyten or twentyten-based, maybe?) for this:

#content img

and delete this line:

width: auto;

Now resizing should work. Hooray!

Blah, blah, blah