I have had mine since earlier this year - I posted here http://www.rawfoodtalk.com/showthread.php?t=29119 about it rusting on the bottom. I am so annoyed with this blender right now and probably going to put it away and use my old cheapie. I have to spend 20 mins after making my smoothie every night cleaning it so now I have a dread factor when using it!
I called their customer service and pretty much was told that is just the way it is and it will rust because it isn't stainless steel and is metal.
I am just wanting people to know before they buy it.