updated 04:40 pm EST, Wed December 7, 2011
Old me.com, .mac accounts not getting messages
Some emails sent to me.com or .mac addresses are going missing, according to complaints on Apple's support forums. In particular messages sent from Comcast but predominantly RoadRunner domains are either arriving as much as a day late, or disappearing entirely. The affected domains are also scattered across the country rather than located in a particular region. Unexpectedly, forwarding a message from one account to another may work without issues.
Comcast is allegedly calling the glitch "a .mac problem." One person reports that RoadRunner has passed the matter on to engineers. Because multiple ISPs have been impacted, though, the interrupted mail is likely traceable to difficulties on Apple servers.