Depending on how your PC is configured, the database can take up to one day (!) of processing time to import! This is unavoidable because of the sheer size of the database and the large number of cross-references that Nero has to create. Once imported however, read access to the database is very fast. You can cancel the download at any time but we do not advise this, as it CANNOT be resumed. The database would have to be imported again and this would create double entries.