Like so many of the previous speakers and I had to suffer from premature failure of the card. Just like that, without notice, by a turn on the camera on the other hand, the card was broken suddenly. The camera displays "Card Error" on. On Windows, the card is no longer recognized; Linux he tells me at least, that while a mass storage device is present but can not be talking to him.
This is pathetic. I imagine with horror, the loss would have occurred on a holiday with unsecured pictures.
Away from the nonexistent durability the card was otherwise normal, as you would expect an SDHC card: easily on the PC and the camera and fast enough for the used camera. Thanks to the old time failure to recommend but only for adventurous contemporaries.