OK here is what I have done... Used ESet Smart Security 3 (yes THREE)...since it came out. Perfect for a long time. Decided to upgrade to version 4 a couple weeks ago. Never paid any attention to workgroup PC's on the network. Hadn't accessed anything to know. News, ESet 5 is out. I upgrade. Works great, UNTIL...... Well I can't even see my own PC on the workgroup, let alone the laptops in the house etc. I upgraded to each version. No uninstalls were done. Help please where to start BEFORE I have to attempt deinstallations, etc.