diff --git a/content/html/content/src/nsHTMLInputElement.cpp b/content/html/content/src/nsHTMLInputElement.cpp
index 4c03f78a03c..887f98b87cf 100644
--- a/content/html/content/src/nsHTMLInputElement.cpp
+++ b/content/html/content/src/nsHTMLInputElement.cpp
@@ -109,6 +109,7 @@
 
 #include "mozAutoDocUpdate.h"
 #include "nsHTMLFormElement.h"
+#include "nsContentCreatorFunctions.h"
 
 #include "nsTextEditRules.h"
 
@@ -133,6 +134,7 @@ static NS_DEFINE_CID(kLookAndFeelCID, NS_LOOKANDFEEL_CID);
 #define BF_IN_INTERNAL_ACTIVATE 8
 #define BF_CHECKED_IS_TOGGLED 9
 #define BF_INDETERMINATE 10
+#define BF_INHIBIT_RESTORATION 11
 
 #define GET_BOOLBIT(bitfield, field) (((bitfield) & (0x01 << (field))) \
                                         ? PR_TRUE : PR_FALSE)
@@ -554,6 +556,8 @@ nsHTMLInputElement::nsHTMLInputElement(nsINodeInfo *aNodeInfo,
     mBitField(0)
 {
   SET_BOOLBIT(mBitField, BF_PARSER_CREATING, aFromParser);
+  SET_BOOLBIT(mBitField, BF_INHIBIT_RESTORATION,
+      aFromParser & NS_FROM_PARSER_FRAGMENT);
   mInputData.mState = new nsTextEditorState(this);
   NS_ADDREF(mInputData.mState);
 }
@@ -2965,7 +2969,10 @@ nsHTMLInputElement::DoneCreatingElement()
   // Restore state as needed.  Note that disabled state applies to all control
   // types.
   //
-  PRBool restoredCheckedState = RestoreFormControlState(this, this);
+  PRBool restoredCheckedState =
+      GET_BOOLBIT(mBitField, BF_INHIBIT_RESTORATION) ?
+      PR_FALSE :
+      RestoreFormControlState(this, this);
 
   //
   // If restore does not occur, we initialize .checked using the CHECKED
diff --git a/content/html/content/src/nsHTMLSelectElement.cpp b/content/html/content/src/nsHTMLSelectElement.cpp
index 00fb98da1ae..0136a915912 100644
--- a/content/html/content/src/nsHTMLSelectElement.cpp
+++ b/content/html/content/src/nsHTMLSelectElement.cpp
@@ -47,6 +47,7 @@
 #include "nsIForm.h"
 #include "nsFormSubmission.h"
 #include "nsIFormProcessor.h"
+#include "nsContentCreatorFunctions.h"
 
 #include "nsIDOMHTMLOptGroupElement.h"
 #include "nsIOptionElement.h"
@@ -140,6 +141,7 @@ nsHTMLSelectElement::nsHTMLSelectElement(nsINodeInfo *aNodeInfo,
     mIsDoneAddingChildren(!aFromParser),
     mDisabledChanged(PR_FALSE),
     mMutating(PR_FALSE),
+    mInhibitStateRestoration(!!(aFromParser & NS_FROM_PARSER_FRAGMENT)),
     mNonOptionChildren(0),
     mOptGroupCount(0),
     mSelectedIndex(-1)
@@ -1353,7 +1355,9 @@ nsHTMLSelectElement::DoneAddingChildren(PRBool aHaveNotified)
   }
 
   // Restore state
-  RestoreFormControlState(this, this);
+  if (!mInhibitStateRestoration) {
+    RestoreFormControlState(this, this);
+  }
 
   // Now that we're done, select something (if it's a single select something
   // must be selected)
diff --git a/content/html/content/src/nsHTMLSelectElement.h b/content/html/content/src/nsHTMLSelectElement.h
index 886e999b45e..bb93a3173d7 100644
--- a/content/html/content/src/nsHTMLSelectElement.h
+++ b/content/html/content/src/nsHTMLSelectElement.h
@@ -491,6 +491,10 @@ protected:
    *  Used by nsSafeOptionListMutation.
    */
   PRPackedBool    mMutating;
+  /**
+   * True if DoneAddingChildren will get called but shouldn't restore state.
+   */
+  PRPackedBool    mInhibitStateRestoration;
   /** The number of non-options as children of the select */
   PRUint32  mNonOptionChildren;
   /** The number of optgroups anywhere under the select */
diff --git a/content/html/content/src/nsHTMLTextAreaElement.cpp b/content/html/content/src/nsHTMLTextAreaElement.cpp
index 8e105b22a20..ce9eea9de28 100644
--- a/content/html/content/src/nsHTMLTextAreaElement.cpp
+++ b/content/html/content/src/nsHTMLTextAreaElement.cpp
@@ -76,6 +76,7 @@
 #include "nsDOMError.h"
 #include "mozAutoDocUpdate.h"
 #include "nsISupportsPrimitives.h"
+#include "nsContentCreatorFunctions.h"
 
 #include "nsTextEditorState.h"
 
@@ -204,6 +205,8 @@ protected:
   /** Whether or not we are done adding children (always PR_TRUE if not
       created by a parser */
   PRPackedBool             mDoneAddingChildren;
+  /** Whether state restoration should be inhibited in DoneAddingChildren. */
+  PRPackedBool             mInhibitStateRestoration;
   /** Whether our disabled state has changed from the default **/
   PRPackedBool             mDisabledChanged;
   /** The state of the text editor (selection controller and the editor) **/
@@ -249,6 +252,7 @@ nsHTMLTextAreaElement::nsHTMLTextAreaElement(nsINodeInfo *aNodeInfo,
     mValueChanged(PR_FALSE),
     mHandlingSelect(PR_FALSE),
     mDoneAddingChildren(!aFromParser),
+    mInhibitStateRestoration(!!(aFromParser & NS_FROM_PARSER_FRAGMENT)),
     mDisabledChanged(PR_FALSE),
     mState(new nsTextEditorState(this))
 {
@@ -676,8 +680,9 @@ nsHTMLTextAreaElement::DoneAddingChildren(PRBool aHaveNotified)
       // sneak some text in without calling AppendChildTo.
       Reset();
     }
-
-    RestoreFormControlState(this, this);
+    if (!mInhibitStateRestoration) {
+      RestoreFormControlState(this, this);
+    }
   }
 
   mDoneAddingChildren = PR_TRUE;
diff --git a/parser/htmlparser/tests/mochitest/Makefile.in b/parser/htmlparser/tests/mochitest/Makefile.in
index 806e38fb1f1..9bc8270947b 100644
--- a/parser/htmlparser/tests/mochitest/Makefile.in
+++ b/parser/htmlparser/tests/mochitest/Makefile.in
@@ -59,6 +59,7 @@ _TEST_FILES =	parser_datreader.js \
 		test_bug460437.xhtml \
 		test_bug502091.html \
 		bug_502091_iframe.html \
+		test_bug566879.html \
 		test_compatmode.html \
 		invalidchar.xml \
 		$(NULL)
diff --git a/parser/htmlparser/tests/mochitest/test_bug566879.html b/parser/htmlparser/tests/mochitest/test_bug566879.html
new file mode 100644
index 00000000000..dc8d2b1155a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug566879.html
@@ -0,0 +1,60 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=566879
+-->
+<head>
+  <title>Test for Bug 566879</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body onload='runTest();'>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=566879">Mozilla Bug 566879</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+<form>
+<input type=text id=textfield name=textfield>
+<input type=checkbox id=checkbox name=checkbox>
+<input type=radio id=radio1 name=radio>
+<input type=radio id=radio2 name=radio>
+<textarea name=textarea id=textarea></textarea>
+<select name=select id=select>
+<option value=foo>Foo</option>
+<option value=bar selected>Bar</option>
+</select>
+</form>  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+function runTest() {
+  initialState = document.getElementById('content').innerHTML;
+  document.getElementById('textfield').value = "foo";
+  document.getElementById('checkbox').checked = true;
+  document.getElementById('radio2').checked = true;
+  document.getElementById('textarea').value = "foo";
+  document.getElementById('select').value = "foo";
+  setTimeout(continuation1, 1);
+}
+
+function continuation1() {
+  document.getElementById('content').innerHTML = initialState;
+  setTimeout(continuation2, 1);
+}
+
+function continuation2() {
+  is(document.getElementById('textfield').value, "", "The text field should have gone back to its initial state.");
+  ok(!document.getElementById('checkbox').checked, "The checkbox should have gone back to its initial state.");
+  ok(!document.getElementById('radio2').checked, "The second radio button should have gone back to its initial state.");
+  is(document.getElementById('textarea').value, "", "The text area should have gone back to its initial state.");
+  is(document.getElementById('select').value, "bar", "The select should have gone back to its initial state.");
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForExplicitFinish();
+</script>
+</pre>
+</body>
+</html>
+