Flash Memory Card Issue

I have an Akai memory card which has never given me any trouble until now.

My problem is that the card is full of data but even when I delete files the card still appears to be full and I can't save any new data.

I have tried removing the card after deleting and the inserting that card and start the MP. This makes no difference, the card is still full.

Any advice guys?

have you put it in a mac, and then deleted files? if you dont clear the trash while the cards connected it can appear full.

otherwise try formatting the card

Thanks for that....I will try a format, that should work.