Quote Originally Posted by mpot View Post
Have you considered that your cards may not be genuine, but may be fakes?

Far too many memory cards sold on the internet are fakes, which are typically a lot slower than genuine cards, and/or may be lower capacity than what they are supposed to be.

If you are buying any memory cards online, be sure to only buy from authorised resellers (for example, 1800memory is an authorised SanDisk reseller on eBay, but many other "SanDisk" items on eBay are fakes).
As I said at the start, they are from local supermarkets, Aldi and Woolworths, so I do not expect them to be fakes. Since that post, I bought a 16GB Sandisk card and it is even faster than the 8GB. The Verbatim card is left in the dust.