An interesting series of papers on legal issues of cloud computing are being published by Queen Mary, University of London. The following are my summaries – any errors in them are my fault, not that of the authors.
For a while there has been one pair of contradictory answers to the question of whether an IP address was personal data. Two different German courts were asked about addresses in the log of a web server: one said that was personal data, the other said it wasn't.