Some customers with TalkTalk ADSL/VDSL suffered problems overnight. There were drops shortly after midnight and logins at around 6:30. This looks to be caused by a problem within the TalkTalk network.
TalkTalk say: "This incident was caused by failed planned works to restart a FPC card on our Core router"
Some line reconnected shortly after midnight, whilst others were still down until 6:34 this morning. If customers are still offline a reboot of your router may be needed.