Does anybody know the status of this C++ Inversion of Control Container?
Last release was November 2009, but last activity on the code base was April 14, see http://code.google.com/p/pococapsule/updates/list.
There appears to be one author; contact him for detailed information about the status of the project.
Long periods between releases doesn't necessarily indicate a dead project. Sometimes the code is so good, it doesn't need fixing every five minutes. That it is open-source is good insurance; if you decide to use it, and there is a problem, you might be able to fix it yourself.