(Reformatted description, please use the preview button and WikiFormatting.)
The problem is you are using the latest-development-level docs with a released level of the code, which does not have some of the recent changes introduced in trunk. Specifically, csrf_token does not exist in 1.1.1 or earlier. You can fix the problem you see by just deleting it from your template.
The 1.1 level of the tutorial part 4 is here: http://docs.djangoproject.com/en/1.1/intro/tutorial04/#intro-tutorial04
(The problem of there being no link to the 1.1.1 docs is covered by #12155.)