A peer-to-peer file sharing client with background file sharing is provided in a segmented peer-to-peer file sharing network. The poly-vinylpyrrolidone powder composition is produced by adding a secondary amine or a salt thereof to polyvinylpyrrolidone having a K value of not lower than 60 and not higher than 130, or by heat drying an aqueous solution containing polyvinylpyrrolidone having a K value of not lower than 60 and not higher than 130 and a secondary amine or a salt thereof. When the cover in the open position, the removable panel may be removed from the standby generator. A loading ring fit to the annular cavity urges the inner sealing surface radially inwardly to sealingly engage the rotating cylindrical sleeve. As each RAM image is read, another RAM image is written and vice versa.