We are seeing customer routers being attacked this morning, which is causing them to drop. This was previously reported in the status post http://status.aa.net.uk/1877 where we saw that the attacks were affecting ZyXEL routers, as well as other makes.
Since that post we have updated the configuration of customer ZyXEL routers, where possible and these are no longer being affected. However, these attacks are affecting other types of routers.
We suggest that customers with lines that are dropping to check their router configuration and disable access to the router's web interface from the internet, or at least to change the the port used (eg one in the range of 1024-65535)
Please speak to Support for more information.
This is happening again, do speak to suport if you need help changing the web interface settings. Customers with ZyXELs can change the port from the control pages.