Now getting the same mission over and over again wouldn't be too bad a problem. However it's a photo recon mission Does anyone know why it keeps giving me the same mission over and over and over? (photo recon Singapore)
What version is your game. To check the version go to the main page and look to the bottom right and it will tell you the version there.
If you are playing Silent Hunter Wolves of the Pacific the version should be 1.4
If you are playing Silent Hunter with U-boat Missions the version should be 1.5.
If you have version 1.4 you are up to date. The patrol should stop repeating itself. Not much else you can do but if you are into adding a mod it will probably stop it.
You have to uninstall SH4, do a restart, install SH4 and run the patch after re-installation. Do another restart...and play. Hopefully that fixes it.....