Sadly my experience at JER is not great to date. I hadn't had a secondary there in three years of going through about 2-3 times a month. I am on 100% secondaries under the new machines. They are advising passengers that if you have more than one laptop/tablet/kindle, you should remove the second etc. from your bag. I am hoping it will improve in time but they've been there a good few months now and I'm not seeing an improvement.