Hi, I recently bought a second hand LG GT540. I have loaded an 8GB micro SD card. However, when I try to access the card the error message 'sd card not mounted' is displayed. I have tried removing the card and re-inserting it. I have reformatted it. Neither of these have worked. The card works fine on my laptop and other (non android) mobile phone. Can anyone offer a solution please? Thank you in advance.