slow importing from card reader.

Any one have problems with long imports of raw files from a flash card I use a 7d 18 mp Raw shooting 448 photo started importing from a pocket card reader. the card is a 32 GB it does not matter what make of card , I use Top makes like transcend but its taking up to 4 hours to import. last time I had this trouble 5 hours with another make , Im loading to a mac book pro , i tried direct inpoting and as I normally Do, into aperture 3. Yet my wife. on her pC less power then this and it down loaded in 30 min. Im gutted. Why, I would use hers more Bt thats a no no , could it be due to the amount of photos or HD usage . I have a 750 gb HD and there is 143 gb Available.

Any one reflect on this why the inprting is so slow?

2.2 GHtZ processor intel cor I7

* Gb ram 1333 ddr3

OSX lion.