The smaller chunk size does not reduce download speed as much as the LimeWire/Acquisition UI tells you. (Try a network monitor or something and look at the overall downstream) The downloads are a lot more robust since then and LimeWire/Acquisiton does not create large files containing mainly empty data any more. Corruptions should be identifed earlier and the overall downloads should be more robust. - This new feature might also come very handy if tree hashes and partial file sharing are implemented one day - although partial filesharing is generally overestimated (except for it can be used to force users to share - although it is my experience that with higher connection speeds freeloaders are becoming rarer).