Here is the text as it appears on Xtra's website:
Information on the current Broadband Issues

Here's a summary of the current situation:
Currently we have a cable in the United States that is damaged.
This means some customers may be experiencing slow traffic when browsing some international websites at the present time.
We apologise for any inconvenience this may be causing and hope to have the situation resolved shortly.
What are you doing about it? Steve
Our United States Provider is working very hard to repair the cable.
We hope to have the issue resolved as soon as possible.
Please keep revisiting this (Xtra Help) Page for updates on the Current issue.