InfoPath Dev

Hi, i have the next problem:

I have a trusted form on sharepoint form library with a specific data to sign, when a fill out the form(only fill without sign) and send the form to spoint in short time i dont have problem the process run fine, but if i wait for example one minute in the same routine, infopath send me the next error:

"the signature si not a trust publisher."

Why? somebody??

I am using:
in security: Full Trusted and the sign this form is checked.

Solution to my problem:

Check this:
http://support.microsoft.com/kb/867441/en-us


CAUSE
This problem occurs if all the following conditions are true:
• The signed certificate comes from an un-trusted root.
• The signed certificate is in your Trusted Publishers list.
• You have a private key for the signed certificate.
This problem may occur when you create a test certificate for development purposes.

I'm glad you could figure it out Senor Villareal!