Well this is a hot topic right now. Since you have been putting your card in your sly box regularly, check if there is an extra digit at the end of your serial number..
I think from memory its:
Services 0 3
on your sly remote
If the last number is in brackets, your card has been paired to your box and im afraid thats the end of it with oscam as the new pairing method has not been cracked and might not be for a long time to come.