Consider yourself lucky that it hasn't happened to you. I personally haven't had a 10 minute transaction, but I have had a very long wait that has gone over 10 minutes. I gave up and went to the pharmacy to ring up my Tylenol. They NEVER have more than one cashier working and the line is usually 5 or 6 deep. All of these good people use their cards sometimes with multiple transactions so they can use their ECBs to get deals. Sorry but my time is more valuable. I have never gotten any good deal there, I end up paying more than I would any where else. I never get coupons from the register that are worth anything to me. Others do, but for me it is a total waste to time and money.
The pp was not talking about waiting in line for 10 minutes, they were talking about their individual transaction taking 10 minutes due to issues with the card.
Waiting in line because there is only one cashier working is a separate complaint