Just wanted to report that I've noticed a huge improvement in P2P syncing since the update. I record an internet audio stream to an MP3 file in a Mesh folder on my PC at home and have it P2P sync to my laptop at work. The audio stream is several hours long. I have my recording program set to break the recording in to one hour intervals and then name and ID3 tag the file. The idea is that I fire my laptop up some time during the day after at least an hour of recording and Mesh syncs the file with my laptop. The Mesh folder is monitored by Zune software on my laptop which then automatically adds the audio file to my Zune. It's then all ready for me to listen to on the way home. Since the update the files seem to almost immediately start syncing after they're saved on my home PC. Great update!
