There is a glitch with exit turnstile 9 on the northbound exit stairs (second turnstile in from platform edge)
I spoke to the smartcard people last week about it and was told they had a problem with a gate in Pearse.
You tag off fine but the system then tags you on and hits you for 4.30
Rail Users Ireland was part of the testing of the smartcard system and anytime we find a problem (we had 20 cards 3 months before the public launch) we reported in and got it fixed. We gave it a very comprehensive going over and in one case forced a serious rethink about how a certain action took place.
This issue in Pearse is new and certainly did not come up during the testing we did and Irish Rail did.
There is a time lag before you can get a refund as the office doesn't get a the report until the following morning. You will be refunded directly to the card. If this is a big problem a batch process could be setup to credit everyone effected