diff --git a/IPython/frontend/prefilterfrontend.py b/IPython/frontend/prefilterfrontend.py
index 6b74027..b495382 100644
--- a/IPython/frontend/prefilterfrontend.py
+++ b/IPython/frontend/prefilterfrontend.py
@@ -107,6 +107,8 @@ This is the wx frontend, by Gael Varoquaux. This is EXPERIMENTAL code."""
 
 
     def execute(self, python_string, raw_string=None):
+        if self.debug:
+            print 'Executing Python code:', repr(python_string)
         self.capture_output()
         LineFrontEndBase.execute(self, python_string,
                                     raw_string=raw_string)
@@ -178,7 +180,8 @@ This is the wx frontend, by Gael Varoquaux. This is EXPERIMENTAL code."""
         self.last_result = dict(number=self.prompt_number)
         try:
             for line in input_string.split('\n'):
-                filtered_lines.append(self.ipython0.prefilter(line, False))
+                filtered_lines.append(
+                        self.ipython0.prefilter(line, False).rstrip())
         except:
             # XXX: probably not the right thing to do.
             self.ipython0.showsyntaxerror()
@@ -186,6 +189,7 @@ This is the wx frontend, by Gael Varoquaux. This is EXPERIMENTAL code."""
         finally:
             self.release_output()
 
+        # Clean up the trailing whitespace, to avoid indentation errors
         filtered_string = '\n'.join(filtered_lines)
         return filtered_string
 
diff --git a/IPython/frontend/wx/console_widget.py b/IPython/frontend/wx/console_widget.py
index a4ac703..df06a28 100644
--- a/IPython/frontend/wx/console_widget.py
+++ b/IPython/frontend/wx/console_widget.py
@@ -34,6 +34,8 @@ import re
 # screen: this should not be editable by the user.
 
 _DEFAULT_SIZE = 10
+if sys.platform == 'darwin':
+    _DEFAULT_STYLE = 12
 
 _DEFAULT_STYLE = {
     'stdout'      : 'fore:#0000FF',
diff --git a/IPython/frontend/wx/ipythonx.py b/IPython/frontend/wx/ipythonx.py
index aaef3e7..df81443 100644
--- a/IPython/frontend/wx/ipythonx.py
+++ b/IPython/frontend/wx/ipythonx.py
@@ -54,6 +54,9 @@ class IPythonXController(WxController):
             wx.CallAfter(self.new_prompt,
                          self.input_prompt_template.substitute(
                                 number=self.last_result['number'] + 1))
+        else:
+            wx.CallAfter(wx.GetApp().Exit)
+        self.write('Exiting ...', refresh=False)
  
 
     def do_exit(self):