This seems to me to be an authentication problem. Specifically, QVS issues Named User CALs based on Windows login information. If you have the default NTFS authorization enabled, when a user accesses a document from a Windows workstation, it will pull the NT identity that he is logged in under and issue that user a CAL. When accessing a document from an IPod, you do not have an NT login identity so QVS can't issue a Named User CAL.
Therefore, if you have a significant amount of users using IPods to connect to files, it might be a good idea to switch from NTFS authorization to DMS. Under DMS, you can issue Qlikview-proprietary usernames for people using IPods and keep domain accounts for people accessing documents from workstations.
Thank you Vlad for your suggestion. That allowed to narrow our search for solutions and finally got the iPhone up and running. What we did is to configure the following options (which are found in this page: http://community.qlik.com/wikis/qlikview-wiki/iphone-document-access.aspx):
Authenticated Access Using NTFS Authorization
- QlikView Server Authorization: "NTFS"
- QlikView Server Authentication: "Prohibit Anonymous"
- QlikView Web Server Ajax access: "AlwaysAnonymous" = deselected
On the File Server the user in question needs to be added to the document.
First, we solved the problem by setting the Identification (Under System / Licenses / CALs / General) to Machine name, but we didn't know why. So after our research, we could change that to username because that was generating anonymous licenses for every session until we ran out of licenses.
Hope that helps you dtorcates.