Signature Acrobat 8 vs. Acrobat 9

Hi there, I am new here and hope you can help me.
"Sorry my English isn't good , so I hope you understand my questions"
When I sign a PDF in Acrobat 8 my signature will be displayed whit a green hook and a pencil symbol. When I send this pdf to a colleague of mine, and he/she sig. this pdf, my signature got a new symbol (a hook and a exclamation mark) an the the second sig. got the green hook and the pencil symbol.
The sig. notification status from my sig. told me "The revision of the document that was covered by this signature has not been altered, however, there have been subsequent changes of this document" But my signature is still valid.
When I open this document in Acrobat 9, there is no information about changes?! All sig. are valid but the symbols (hook&pencil) don't be displayed.
Is there a other security settings in Acrobat 8 about Acrobat 9. Is this a bug or a feature
Thanx for helping
SeekApe

Hi JR,
Thanks for sending the file.
The problem is the file doesn’t allow for the addition of a second signature, so when you applied signature #2 it invalidated the first signature. I used the “View Signed Version” feature to create a roll-back copy of the file so it only contains the first signature, and I’ve attached the file. Please open the attached file, then select the File > Properties menu item, and then select the Security tab. Note that Changing the Document is set to “Not Allowed”. Although it’s a bit of a generic term, what it really means you cannot create, modify, or delete items on the PDF layer, and when you added the second form field (the field that contains signature #2) it broke the first signature.
In order to author the document correctly, you need to add the required form fields before applying security. As an aside, the signature appearance (what you see in the signature form field, which at its heart is just a special use text field) is not part of the PDF layer, but rather part of the annotation layer, so where you see “Signing: Allowed” on the Document Properties dialog it really means you can add the signature appearance to an existing signature field. It doesn’t mean that you can create a new form field, only that you can sign an existing field.
Steve

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