In reply to Reach>Talent:
From the Raspberry Pi website
"A note on SD card nomenclature. The card we’re offering here is rated as Class 4 – in some metrics, Class 4 means slow. This is not the case with this card, which has outperformed many Class 6 and Class 10 cards in our tests – classification seems not to correlate well with random read/write performance. Samsung’s unusual focus on random-access performance on their SD memory means that this card performs very fast and very reliably: we think you’ll be pleasantly surprised!"
Try Samsung CF as it may be same electronics as SD in a different package.