Uh. Is it possible that there is a secret "phone home/scan" like was in Poser 4 pro (which searched your LAN for other computers running the same license of Poser), and norton is rightly blocking this activity? not that poser software shouldn't report back to HQ or scan your network or anything like that, heaven forbid I should be critical of anything like that, but isn't that possibly the cause of the problem?