Of recent, I have upgraded my QNAP 559pro with the newest QNAP firmware. I keep my entire iTunes library and other media files on the NAS and here is the rub - after the latest firmware, I an unable to "log in" with my few accounts to access the iTunes or anything else via AFP. What I did discover that if I set iTunes with full permissions (anyone)...then I could get in and have my iTunes files accessed. Has anyone else had problem with firmware 4.xx with QNAP and AFP? Is there a fix for this (hopefully not one that requires running command line or a script). FYI - I did go to QNAP's forums and it seemed rather hit and miss with this issue and of course QNAP has made no official effort to state there is a problem nor a patch in the offering.