Well something is definitely going on...
.Mac webmail has been spazzing out all day...no service, slow service, icons that don't work, non-responses, duplicate and/or "phantom" folders/mailboxes that are there one minute, gone the next, etc.
I guess they're doing some Tiger-related behind-the-scenes tweaking and shuffling in these final days leading up to the 29th...
Whoever it is, they're making a mess!