I took this from irishtimes.com
"DAVID LABANYI and JASON MICHAEL
Eircom has said a number of its internet customers suffered interruptions to their service last night due to an apparent attack by hackers or spammers.
The company said customers experienced “significant congestion while browsing the web” last night and said it appeared to be related to an “unprecedented volume of traffic deliberately directed” at the network.
Eircom said services have since been restored. This is the second time in recent days that the company’s services have been interrupted.