Do you get uploads & search results? channel list in chat?
This is normally an issue with firewall or router configuration, although secondaries can be slow to build using 3.0 patch as they don't fill rapidly with flooders like happens using a hosts file, however I would expect some after 2 hours, I suggest checking your firewall config & visiting
www.portforward.com to see if your modem/router is listed, if so they have good instructions how to set it up.
Alternatively you could drop into our help chatroom WinMxWorld.com Help_E3D7EFD50D3D & someone will be glad to help checking things out