Re-ordering of text items makes other drop-downs on node disappear in IE6

Using the field ordering that breaks in IE6, could you please export (and attach here as a plain text file) your content type using the export function provided by content_copy module in CCK itself?

First, I should say that the autocomplete widgets module does not add javascript by itself. It merely uses the autocomplete js provided by Drupal core itself, and the drag'n'drop js provided by CCK itself to manage multiple value fields. So I think the problem is probably related to something else on your particular installation. I cannot see how this module can break anything in IE when it doesn't use javascript directly.

I cannot reproduce this problem here, so it is hard to tell what might be going on in your installation.

The content type you have attached contains a few more fields. Could you please try with another type using a text field with the autocomplete widget and test. If it works, then try adding a select field and test. If it works, then add the date field, and so on.

Maybe the problem is related to some other javascript present on the page.