Hi Madhuri,
i tried both changing the security settings in my IE and removed and added the data connections again, but with the same result.
the error does not appear to be there, because the error message is exactly the same,
"Infopath cannot submit the form.
An error occurred while the form was being submitted.
The form cannot be submitted to the following location http://......
Access denied.
Access is denied."
i also checked my sharepoint site permission where the form is published, but everything seems as it should be...
what more can i try??
BR
Rume