I have an application that uses FAXCOMEXLib to send faxes to Windows Fax services. These faxes are all PDF documents. After upgrading from Adobe Reader 7 to X the first fax in the Windows Fax services queue gets sent, but the second hangs up and the Adobe reader window is on the screen and hung as well. Uninstalled Reader X and went back to 7 and it works again. Also tried Reader 8 and that appears to have the same issue as X. Any ideas?