This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I don't have much experience with Spring DM, but to my knowledge it's not an OSGi container but instead a framework/API which makes several OSGi related tasks easier. If I remember correctly you can easily use Spring DM with any compatible OSGi container like Felix or Equinox. So it would obviously make no sense that Spring DM is an OSGi container itself