I have a problem with my Imac. It's an intel based machine with Tiger running on it. Just recently when i put in a cd to copy files onto and burn it keeps telling the file is too big and not enough room on the cd. The file is only 30mb ! I have tried apples own copying software and also discblaze as well gets same result. tried different makes of cd as well. Reads CD's and DVD's all ok just problem when trying to write. Any suggestions?