Well that's central Dublin for you. The Porterhouse in Temple Bar has been like that a long time, in my experience. They still pack them in.
I tend to choose my times carefully with the Porterhouse, and will usually only go for one. It's not a good place to spend an evening.
They don't seem to be suffering from my lack of custom, and I vote with my feet, pointing them up Parliament Street, right at city hall then round to the left at Christchurch <!-- s:D --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt="

" title="Very Happy" /><!-- s:D -->