--- rt.equinox.p2/bundles/org.eclipse.equinox.p2.publisher.eclipse/src/org/eclipse/equinox/p2/publisher/eclipse/BundlesAction.java.orig	2012-05-05 15:24:03.000000000 +0200

+++ rt.equinox.p2/bundles/org.eclipse.equinox.p2.publisher.eclipse/src/org/eclipse/equinox/p2/publisher/eclipse/BundlesAction.java	2012-05-17 16:14:48.607827015 +0200

@@ -805,7 +805,7 @@

 				//First check to see if there is already an IU around for this

 				IInstallableUnit bundleIU = queryForIU(result, bundleDescriptions[i].getSymbolicName(), PublisherHelper.fromOSGiVersion(bd.getVersion()));

 				IArtifactKey key = createBundleArtifactKey(bd.getSymbolicName(), bd.getVersion().toString());

-				if (bundleIU == null) {

+				if (bundleIU == null || !bd.getLocation().equals(bundleIU.getProperty("file.name"))) {

 					createAdviceFileAdvice(bundleDescriptions[i], info);

 					// Create the bundle IU according to any shape advice we have

 					bundleIU = doCreateBundleIU(bd, key, info);