Issues when submitting a form

Hi,

I have a pdf Form made using pro dc. There is a submit form button at the bottom which is set to pdf the doc and then mailto:user@domain.co.uk

When the users fill this in using adobe reader XI the problem they get is when the use the submit button. It opens a state of outlook and attaches the PDF the problem is outlook instance tends to freeze / hang and has to be forced closed and try again and again. Its 50/50 whether the email can be sent.

I have posted in an outlook forum also but thought id try he and see if anyone can help or explain whats going on

Thanks in advance

Dan