The org.apache.felix.ipojo bundle imports, exports and physically contains interface-classes of packages org.osgi.services.cm and org.osgi.services.log, both with version 1.3.
I'm running ipojo in karaf 3.0.2. There, these osgi-packages also exists, just in another version.
Sometimes it happens that a bundle of mine, which has a package-dependency on org.osgi.services.cm is bound to the ipojo-version instead of the one of felix/karaf. Now, the bundle is resolved, but the service dependency on the ConfigurationAdmin can never be resolved, because the implementation is incompatible to the imported interface.
I can fix that, if I play around with the bundle start levels.
Anyway, I think it's a bug in iPOJO, because it should not inline any OSGi API packages.