diff --git a/test/acceptance/base.rb b/test/acceptance/base.rb
index 44f04fa79..bcc35eae7 100644
--- a/test/acceptance/base.rb
+++ b/test/acceptance/base.rb
@@ -25,7 +25,7 @@ end
 
 # Enable logging if requested
 if ENV["ACCEPTANCE_LOG"]
-  logger = Log4r::Logger.new("acceptance")
+  logger = Log4r::Logger.new("test")
   logger.outputters = Log4r::Outputter.stdout
   logger.level = Log4r.const_get(ENV["ACCEPTANCE_LOG"].upcase)
   logger = nil
diff --git a/test/acceptance/port_forward_test.rb b/test/acceptance/port_forward_test.rb
index 55c3471e2..7daffb187 100644
--- a/test/acceptance/port_forward_test.rb
+++ b/test/acceptance/port_forward_test.rb
@@ -6,15 +6,23 @@ require "uri"
 require "vagrant/util/retryable"
 
 require "acceptance/support/shared/command_examples"
+require "support/tempdir"
 
 describe "vagrant port forwarding" do
   include Vagrant::Util::Retryable
 
   include_context "acceptance"
 
-  it "forwards ports properly" do
+  def initialize_environment(env=nil)
     require_box("default")
 
+    env ||= environment
+    env.execute("vagrant", "box", "add", "base", box_path("default")).should succeed
+  end
+
+  it "forwards ports properly" do
+    initialize_environment
+
     guest_port = 3000
     host_port  = 5000
 
@@ -27,7 +35,6 @@ end
 VFILE
     end
 
-    assert_execute("vagrant", "box", "add", "base", box_path("default"))
     assert_execute("vagrant", "up")
 
     thr = nil
@@ -49,4 +56,36 @@ VFILE
       thr.kill if thr
     end
   end
+
+  it "detects and corrects port collisions" do
+    # The two environments need to share a VBOX_USER_HOME so that the
+    # VM's go into the same place.
+    env_vars     = { "VBOX_USER_HOME" => Tempdir.new("vagrant").to_s }
+    environment  = new_environment(env_vars)
+    environment2 = new_environment(env_vars)
+
+    # For this test we create two isolated environments and `vagrant up`
+    # in each. SSH would collide, so this verifies that it won't!
+    begin
+      initialize_environment(environment)
+      initialize_environment(environment2)
+
+      # Build both environments up.
+      environment.execute("vagrant", "init").should succeed
+      environment.execute("vagrant", "up").should succeed
+      environment2.execute("vagrant", "init").should succeed
+      environment2.execute("vagrant", "up").should succeed
+
+      # Touch files in both environments
+      environment.execute("vagrant", "ssh", "-c", "touch /vagrant/foo").should succeed
+      environment2.execute("vagrant", "ssh", "-c", "touch /vagrant/bar").should succeed
+
+      # Verify that the files exist in each folder, properly
+      environment.workdir.join("foo").exist?.should be
+      environment2.workdir.join("bar").exist?.should be
+    ensure
+      environment.close
+      environment2.close
+    end
+  end
 end
diff --git a/test/acceptance/support/config.rb b/test/acceptance/support/config.rb
index 894464293..f61227aed 100644
--- a/test/acceptance/support/config.rb
+++ b/test/acceptance/support/config.rb
@@ -11,7 +11,7 @@ module Acceptance
     attr_reader :box_directory
 
     def initialize(path)
-      @logger = Log4r::Logger.new("acceptance::config")
+      @logger = Log4r::Logger.new("test::acceptance::config")
       @logger.info("Loading configuration from: #{path}")
       options = YAML.load_file(path)
       @logger.info("Loaded: #{options.inspect}")
diff --git a/test/acceptance/support/isolated_environment.rb b/test/acceptance/support/isolated_environment.rb
index d30ab8b24..1b7b791de 100644
--- a/test/acceptance/support/isolated_environment.rb
+++ b/test/acceptance/support/isolated_environment.rb
@@ -14,15 +14,15 @@ module Acceptance
     def initialize(apps=nil, env=nil)
       super()
 
-      @logger = Log4r::Logger.new("acceptance::isolated_environment")
+      @logger = Log4r::Logger.new("test::acceptance::isolated_environment")
 
-      @apps = apps || {}
-      @env  = env || {}
+      @apps = apps.clone || {}
+      @env  = env.clone || {}
 
       # Set the home directory and virtualbox home directory environmental
       # variables so that Vagrant and VirtualBox see the proper paths here.
-      @env["HOME"] = @homedir.to_s
-      @env["VBOX_USER_HOME"] = @homedir.to_s
+      @env["HOME"] ||= @homedir.to_s
+      @env["VBOX_USER_HOME"] ||= @homedir.to_s
     end
 
     # Executes a command in the context of this isolated environment.
@@ -32,8 +32,6 @@ module Acceptance
       # Create the command
       command = replace_command(command)
 
-      @logger.info("Executing: #{[command].concat(argN).inspect}")
-
       # Determine the options
       options = argN.last.is_a?(Hash) ? argN.pop : {}
       options = {
@@ -45,6 +43,7 @@ module Acceptance
       argN << options
 
       # Execute, logging out the stdout/stderr as we get it
+      @logger.info("Executing: #{[command].concat(argN).inspect}")
       Vagrant::Util::Subprocess.execute(command, *argN) do |type, data|
         @logger.debug("#{type}: #{data}") if type == :stdout || type == :stderr
         yield type, data if block_given?
diff --git a/test/acceptance/support/shared/base_context.rb b/test/acceptance/support/shared/base_context.rb
index b511e8766..887f4a980 100644
--- a/test/acceptance/support/shared/base_context.rb
+++ b/test/acceptance/support/shared/base_context.rb
@@ -7,7 +7,7 @@ shared_context "acceptance" do
   # create more verbose logs for tests which can be useful in the case
   # that a test fails.
   let(:logger_name) { "logger" }
-  let(:logger) { Log4r::Logger.new("acceptance::#{logger_name}") }
+  let(:logger) { Log4r::Logger.new("test::acceptance::#{logger_name}") }
 
   # This is the global configuration given by the acceptance test
   # configurations.
@@ -18,10 +18,7 @@ shared_context "acceptance" do
   # to replace "vagrant" with the proper path to Vagrant as well
   # as tell the isolated environment about custom environmental
   # variables to pass in.
-  let!(:environment) do
-    apps = { "vagrant" => config.vagrant_path }
-    Acceptance::IsolatedEnvironment.new(apps, config.env)
-  end
+  let!(:environment) { new_environment }
 
   before(:each) do
     # Wait for VBoxSVC to disappear, since each test requires its
@@ -33,6 +30,16 @@ shared_context "acceptance" do
     environment.close
   end
 
+  # Creates a new isolated environment instance each time it is called.
+  #
+  # @return [Acceptance::IsolatedEnvironment]
+  def new_environment(env=nil)
+    apps = { "vagrant" => config.vagrant_path }
+    env  = config.env.merge(env || {})
+
+    Acceptance::IsolatedEnvironment.new(apps, env)
+  end
+
   # Executes the given command in the context of the isolated environment.
   #
   # @return [Object]
diff --git a/test/support/isolated_environment.rb b/test/support/isolated_environment.rb
index 6e95c061f..ec61b2055 100644
--- a/test/support/isolated_environment.rb
+++ b/test/support/isolated_environment.rb
@@ -24,7 +24,7 @@ class IsolatedEnvironment
   # @param [Hash] env Additional environmental variables to inject
   #   into the execution environments.
   def initialize
-    @logger = Log4r::Logger.new("isolated_environment")
+    @logger = Log4r::Logger.new("test::isolated_environment")
 
     # Create a temporary directory for our work
     @tempdir = Tempdir.new("vagrant")