Kazaa's (ahem) "owner" Sharman Networks, has stood up the rights of intellectual property holders...well no, maybe just itself and taken steps to zap Kazaa Lite K++.
It seems that Kazaa gets much of its revenue from installing various ads and spyware programs on people's machines (or you can pay $30 to get rid of that). Kazaa Lite K++ bypassed all that so users to get to stealing software, music, and downloading porn faster.
Truly, a major...blow to pirates, warezers, leeches, and porn users everywhere. More info on The Register.