Me too..gone this AM as well. probably a temporary glitch because if you can access your portfolio thru the Yahoo Finance side. So, the linking to the My Yahoo Portal is probably temporarily jacked that's all. Should be ok later..
I posted a reply earlier and it disappeared. Maybe yahoo is getting rid of everything. Lost my portfilio at about 6am same as everyone. I vist yahoo very often every day because of the portfilio and without that I see no reason to use yahoo. Hope it is a glitch but my fear it is a stupid idea. I have been prompted to enter my password to access portfolios several times in the last few weeks which I thought was really odd as it didn't ask me to re-signin to my yahoo.