Index: src/main/java/org/apache/maven/plugin/install/InstallMojo.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/main/java/org/apache/maven/plugin/install/InstallMojo.java	(revision 1695086)
+++ src/main/java/org/apache/maven/plugin/install/InstallMojo.java	(revision )
@@ -20,12 +20,9 @@
  */
 
 import java.io.File;
-import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.List;
-import java.util.concurrent.atomic.AtomicInteger;
 
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.installer.ArtifactInstallationException;
@@ -48,18 +45,8 @@
 public class InstallMojo
     extends AbstractInstallMojo
 {
-
     /**
-     * When building with multiple threads, reaching the last project doesn't have to mean that all projects are ready
-     * to be installed
      */
-    private static final AtomicInteger readyProjectsCounter = new AtomicInteger();
-
-    private static final List<InstallRequest> installRequests =
-        Collections.synchronizedList( new ArrayList<InstallRequest>() );
-
-    /**
-     */
     @Parameter( defaultValue = "${project}", readonly = true, required = true )
     private MavenProject project;
 
@@ -127,19 +114,27 @@
             }
             else
             {
-                installRequests.add( currentExecutionInstallRequest );
                 addedInstallRequest = true;
             }
         }
 
-        boolean projectsReady = readyProjectsCounter.incrementAndGet() == reactorProjects.size();
+        MavenProject lastProject = reactorProjects.get( reactorProjects.size() - 1 );
+        boolean projectsReady = this.project.equals(lastProject);
+
         if ( projectsReady )
         {
-            synchronized ( installRequests )
-            {
-                while ( !installRequests.isEmpty() )
-                {
-                    installProject( installRequests.remove( 0 ) );
+            if (!skip) {
+                synchronized (reactorProjects) {
+                    for (MavenProject installProject : reactorProjects) {
+                        InstallConfiguration config = InstallConfiguration.from(installProject);
+
+                        if (!config.skip()) {
+                            installProject(new InstallRequest()
+                                               .setProject(installProject)
+                                               .setCreateChecksum(config.createChecksum())
+                                               .setUpdateReleaseInfo(config.updateReleaseInfo()));
+                        }
+                    }
                 }
             }
         }