A single user is experiencing issues with his iPad and iPhone, both running iOS 5.1 Periodically, the device will notify the user that it cannot connect to the server and request a password. The connector is setup to use ldap auth but entering this password fails each time. If we reboot either device and then enter the password when prompted it connects again. This is the only user that experiences this problem and it is consistent on both devices. Anyone have any ideas what may cause this problem or a possible solution besides having to reboot the device each time it does this (almost daily)?

GroupWise (v1.2.3.3083)
Mobility (v1.2.3.3125)