I've been able to do a little digging and here's what I have come up with:
You may be attempting to login with an incorrect password, or you may not have a PartnerNet account, or your company isn’t a Symantec Partner Program member. You can either click on the “Forgot password” link found at https://partnernet.symantec.com, you can speak with the person who is designated as the primary contact for your PartnerNet account (if your company is enrolled) or you can contact PartnerUS@symantec.com and we will research and either reset your password, add you to PartnerNet, or tell you where to you can fill out an application for their company to be enrolled in the Partner Program.
Hope this helps
Eileen