This was in the PfG 2011.
Dublin City Council has been running something similar over the last few years.
Self Service Portal
That link isn't working, probably because it uses a session ID. Is it this facility that you were thinking of?
[broken link removed]
The Dublin City facility isn't bad, but it doesn't have all the features of the fixyourstreet.ie. It doesn't allow you to submit photos or videos (which can be very effective in showing the size and extent of these issues), and it doesn't allow you to place issues on a map.
Funnily enough, I've had good results with potholes.ie - it looks like the Dublin City folks monitor and act on reports on that site.
Fixyourstreet.ie is a nice idea, but they need to improve it. Some of the language used on the site is unnecessarily complex. The need to place EVERY issue on the map is an unnecessary barrier for many users.
I really hope they've done the necessary work with the behind-the-scenes processes. It is all very well having the glitzy front-end app, but if the people behind the scenes are not prepared and ready to react and respond to a large volume of new calls, the front-end bit is worse than useless. It does look like South Dublin are doing a decent job of providing an initial response, even to issues outside their own area.
I really hope that they've done the necessary work behind the scenes.