blue post from blizz:
Update 12:00 GMT: This issue is still being investigated and worked on, and our network team is working with our network partners to resolve this issue as soon as possible. We do not have an estimated time for a solution yet, and will update you with further information as soon as we have it.
Update 11:22 GMT: Please note this issue is also affecting emails sent from us, so if you have requested a password reset or require another form of email from our support team, it may be delayed while this issue is being worked on.
Update 10:51 GMT: We do not have an estimated time for a resolution on this issue yet, we continue to liaise with the affected parties, and we will let you know as soon as we have further information on this issue.
We are currently experiencing external general connectivity issues which started on the night of the 28 - 29/12
Symptoms of this issue include either being unable to connect properly to a character, i.e. being stuck on a loading screen, or being disconnected once in-game.
Our network technicians are investigating this issue, and we will update here when we have further information regarding this issue.
We apologise for any inconvenience caused by this issue.
i sugest w8 and happy new year!!!