The weather - and most importantly the unpredictability of the weather.  Yesterday I was planning on going for a walk and got all dressed up to head out.  Just when I got to the door it started to rain.  Then I started to dress down and have a coffee and it stopped raining.  It is annoying - you cant plan anything in advance.

Expensive - Ireland has become too expensive.  Basic items cost a fortune and money just drains out of your account without you even realising it.

Rounds - having to pay for rounds in the pub - and there is always the guy who heads home when its his turn!