Anyone care to elaborate on the evils of boost::bind? Maybe from experience?

I used boost::bind and boost::function in VC6 code of all places and I thought that the resulting code turned out to be pretty decent (I think newer compilers let you use slightly less verbose syntax), and I really liked having the functionality of being able to pre-bind certain arguments. For example, I had a menu item click handler that I was able to bind a call to a unary method, but with different parameters. I thought the resulting code was simpler overall (and easier to refactor).