Index: model/org/eclipse/jdt/internal/core/builder/IncrementalImageBuilder.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/builder/IncrementalImageBuilder.java,v
--- model/org/eclipse/jdt/internal/core/builder/IncrementalImageBuilder.java	27 Jun 2007 19:48:44 -0000	1.97
+++ model/org/eclipse/jdt/internal/core/builder/IncrementalImageBuilder.java	17 Sep 2007 22:39:00 -0000
@@ -501,10 +501,14 @@ 
 				    if (!isExcluded) {
 						IPath addedPackagePath = resource.getFullPath().removeFirstSegments(segmentCount);
 						createFolder(addedPackagePath, md.binaryFolder); // ensure package exists in the output folder
-						// add dependents even when the package thinks it exists to be on the safe side
-						if (JavaBuilder.DEBUG)
-							System.out.println("Found added package " + addedPackagePath); //$NON-NLS-1$
-						addDependentsOf(addedPackagePath, true);
+						
+                        String packageName = addedPackagePath.toString();
+                        // see if any known source file is from the same package... classpath already includes new package
+                        if (!newState.isKnownPackage(packageName)) {
+    						if (JavaBuilder.DEBUG)
+    							System.out.println("Found added package " + addedPackagePath); //$NON-NLS-1$
+    						addDependentsOf(addedPackagePath, true);
+                        }
 				    }
 					// fall thru & collect all the source files
 				case IResourceDelta.CHANGED :