Rumour is that Aer Lingus will be recruiting again in October with a big recruit drive too, suppose to be 200 new crew and they have already taken on about 150 this year.
Training is 4 weeks and can be tough enough, salary basic is about 21,000 pa. Takes about a year or so to get trained for transatlantic but it really depends on how badly they are stuck for TA crew.
Hope this answers your questions. Oh and keep your eyes on the website cause they'll advertise there for cabin crew.
Regards
Carrie