Bufferbloat – Identification, analysis, tools for analyzing overly deep buffering across the (mostly wireless) internet, with some potential for solutions. For an introduction to the bufferbloat problem, see Jim Gettys’talk :
http://gettys.wordpress.com/2011/06/02/google-techtalk-video-is-up/
This talks reportes latest update of work in progress, more information is available online at http://lwn.net/Articles/458625/ or http://www.bufferbloat.net/