[slime-devel] SLIME showing value of symbol in mini-buffer

Hi, I'm not sure what I did to turn on this feature or how to turn it off. When the point is over a symbol in the Lisp buffer, its value is displayed in the mini-buffer. This would normally be fine, but it is a bit of an issue when the symbol is an array with 100,000 elements in it. My machine hates that. I looked in the docs, but I couldn't find what it might be. I do hope this is not part of autodoc mode which I have turned on in my .emacs. Anyway, how do I turn this useful but potentially dangerous feature off? Thanks.