[boost] Thread-safe containers

Browsing through the older posts I could not find any relevant discussion. What is the opinon on implementing thread-safe containers? Java library has them, for example, and, since extending existing containers to be thread safe using locks is a work each client would have to repeat, it looks like a good candidate for standardized library implementation. As for more efficient lock-free impleentations (using CAS) Microsoft has (relatively recently) added singly linked lock-free list to Win32 API. There are examples of lock-free implementations of doubly linked STL list using older Valois algorithm. I would argue that most of multi-threaded programs need thread-safe containers. Tony