SD Card not mounting (SanDisk Ultra 32gb)

Another MacBook Pro Problem
Hi,
I am trying to insert my 32GB SanDisk Ultra SD card into my MacBook Pro 15", however it isnt reading the card, and nothing happens.
I have tried restarting the Mac, updated all software/hardware and still nothing.
Does anyone know why this may be?
Thanks

It's unbelievable. I tried one SDHC Card and two Micro SDHC using two different adapters (one by Samsung other by Kingston), and I had the same problem. The card mounting/recognition by the mac is totally intermittent.
My system is a MacBook Pro 15-inch, Mid 2010, OS X 10.8.5
The SDHC card and both the micro SDHC cards and their adapters are imediately recognized when plugged on my Samsung Ultrabook.
Since I don't have bootcamp here (only Parallels) I cannot say if it's a software (OS X) or a hardware failure. Both things are sad!
André

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