Battle.net Diablo II Player Not Found

My Diablo2 character on USWest Ladder exists on Character Select. And I am sure it’s not expired (I play it everyday).
But click on the character it hangs a while and then shows up Player Not Found
Search on the Internet. I found these two recent posts are similar which means this happens widely, and might be caused by DDoS recently.

Please pay attention to this problem and help people to fix their characters

With the ladder reset my player good to go.