Assume bundle having this in MANIFEST.MF:
Bundle-SymbolicName: org.eclipse.ui.workbench; singleton:=true

Then in result of
String name = (String)
bundle.getHeaders().get(Constants.BUNDLE_SYMBOLICNAME);

in Equinox 3.7 (Indigo) is incorrect string
"org.eclipse.ui.workbench; singleton:=true"

Result of
bundle.getSymbolicName();

is this time correct:
"org.eclipse.ui.workbench"

Please, do you have same results as me in e.g. Felix (or whatever you
use)? If so, I fill fix constructor from
public LogServiceImpl(Bundle bundle)

{ String name = (String) bundle.getHeaders().get( Constants.BUNDLE_SYMBOLICNAME); String version = (String) bundle.getHeaders().get( Constants.BUNDLE_VERSION); delegate = LoggerFactory.getLogger(name + '.' + version); }

to
public LogServiceImpl(Bundle bundle)

{ String name = bundle.getSymbolicName(); String version = bundle.getVersion(); delegate = LoggerFactory.getLogger(name + '.' + version); }