Well, I've got a desktop & laptop both with Win 7. I've uninstalled my 3rd party Firewall/AV Apps (and installed Microsoft Security Essentials) and homegroup is still giving me issues. Here's the unique bit (at least I can't find anyone else with the same issue). Each computer can see the other no problem, but when I try to enter a library on the homegrouped computer I get nothing... I hear the click when I select a library and press open, and then... nothing, it just stays on the page showing me the shared libraries (documents, music, etc.). This is happening both ways (desktop to laptop and laptop to desktop).
It is very frustrating, any help would be appreciated.