Pepipoo, the motorists fightback forum, suffered a short DDOS attack last night and this morning. This post has the details.
The web site is obviously getting up someone's nose, and someone has now resorted to illegal actions. There are several different forums, covering aspects such as speeding, council tickets and private parking tickets, which leaves a large field of possible Pepipoo-haters.
No doubt whoever it was will be unable to resist bragging about it to their friends and the culprits will become known in due course.