Status of AA's?

[Rob T]

I recall some discussion about AA's being buggy and fixing the 
bugs is difficult, and that there may be future changes to how 
AA's operate, for example perhaps moving it to a library solution.

So I am wondering if I should simply avoid using the built-in 
AA's entirely at this time, and instead create my own custom 
solution, or maybe there is a stable AA alternative already 
available?

Can anyone shed some light on what direction I should take?

Thanks!

--rt