Q: Library stalls when uploading from Windows 7; starts over each time I open itunes.

Running windows 7 pro; latest version of iTunes; when running "Match," it uploads all of my songs (after a few restarts) but then stalls on the "rest of your music" upload.  (Total of about 15,000 songs: 10,000 "iTunes" songs; about 5,000 of "your music.")  Starts over from beginning when I restart it after iTunes closes itself out.  In other words, this does not appear to work with my system.  Any suggestions to get it working?

Thanks!

--JR