TWC fiddled with their network yesterday in North San Diego County.  My connection was briefly interrupted several times.  When the smoke cleared, I was able to log onto Road Runner and access and log onto Web Mail from that web page.  Likewise, I was able to log onto Web Mail using:

http://webmail.adelphia.net/webedge/do/mail/folder/view

My Microsoft Outlook, which is linked to my Road Runner e-mail account, continued to work properly as it had been.  So, I guess all is well with the Road Runner web site and Web Mail at the moment.   Hmmm, I wonder if the complaints about TWC posted in this forum had anything to do with the repair to the Road Runner web site and Web Mail.