AT&T Yahoo Mail Unannounced Change
Site:
Lost full featured Yahoo Mail, and now appears to be just Basic. AT&T advises there was a necessary security upgrade, that unfortunately, did not go well for many. 10 hours later, AT&T and Yahoo are still completely silent on issue, as if it never happened.
Many others, on different sites, report a variety of other issues/bugs. Most started prox 2 PM CDT, on May 2.
AT&T calls it an "Upgrade" and advises to just sit tight, and all will be well, within 48 hrs. Hard to have confidence in a company that operates like this. Even if a version change was bug free, and a complete positive, in every way, to every user, a responsible company would never do it without any communication.