Waring Pro Blender is leaking and blade ass...

We have had constant problems with blenders and then researched to find that Waring is very tough and long-lasting.  We bought our new Waring blender in July and it has worked seamlessly for the past several months - until today.  During the blending of a fruit smoothie, the blending action slowed and then stopped.  I turned the blender off, poured out the ingredients and noticed there was a leak coming from the bottom of the blade assembly.  I felt the assembly and it was loose - then I added some water and noticed a constant drip.  Help me!!!  I thought the blade assembly was sealed tight and would withstand ice crushing.  What can be done?