diff --git a/boards/models.py b/boards/models.py
--- a/boards/models.py
+++ b/boards/models.py
@@ -51,7 +51,7 @@ class PostManager(models.Manager):
 
         post = self.create(title=title,
                            text=text,
-                           pub_time=timezone.now(),
+                           pub_time=posting_time,
                            thread=thread,
                            image=image,
                            poster_ip=ip,
@@ -183,7 +183,7 @@ class PostManager(models.Manager):
             if ref_post.count() > 0:
                 referenced_post = ref_post[0]
                 referenced_post.referenced_posts.add(post)
-                referenced_post.last_edit_time = timezone.now()
+                referenced_post.last_edit_time = post.pub_time
                 referenced_post.save()
 
     def _get_page_count(self, thread_count):
diff --git a/boards/static/js/thread_update.js b/boards/static/js/thread_update.js
--- a/boards/static/js/thread_update.js
+++ b/boards/static/js/thread_update.js
@@ -53,6 +53,8 @@ function updateThread() {
     var diffUrl = '/api/diff_thread/' + threadId + '/' + lastUpdateTime + '/';
     $.getJSON(diffUrl)
         .success(function(data) {
+            var bottom = isPageBottom();
+
             var addedPosts = data.added;
 
             for (var i = 0; i < addedPosts.length; i++) {
@@ -81,10 +83,15 @@ function updateThread() {
                 blink(post);
             }
             
-            // TODO Process updated and deleted posts
+            // TODO Process deleted posts
 
             lastUpdateTime = data.last_update;
             loading = false;
+
+            if (bottom) {
+                var $target = $('html,body');
+                $target.animate({scrollTop: $target.height()}, 1000);
+            }
         })
         .error(function(data) {
             // TODO Show error message that server is unavailable?
@@ -93,6 +100,13 @@ function updateThread() {
         });
 }
 
+function isPageBottom() {
+    var scroll = $(window).scrollTop() / ($(document).height()
+        - $(window).height())
+
+    return scroll == 1
+}
+
 function initAutoupdate() {
     loading = false;
 
diff --git a/boards/views.py b/boards/views.py
--- a/boards/views.py
+++ b/boards/views.py
@@ -14,6 +14,7 @@ from django.template import RequestConte
 from django.shortcuts import render, redirect, get_object_or_404
 from django.utils import timezone
 from django.db import transaction
+import math
 
 from boards import forms
 import boards
@@ -420,7 +421,7 @@ def api_get_threaddiff(request, thread_i
 
     thread = get_object_or_404(Post, id=thread_id)
 
-    filter_time = datetime.fromtimestamp(float(last_update_time) / 1000,
+    filter_time = datetime.fromtimestamp(float(last_update_time) / 1000000,
                                          timezone.get_current_timezone())
 
     json_data = {
@@ -560,4 +561,4 @@ def _remove_invalid_links(text):
 def _datetime_to_epoch(datetime):
     return int(time.mktime(timezone.localtime(
         datetime,timezone.get_current_timezone()).timetuple())
-               * 1000 + datetime.microsecond)
\ No newline at end of file
+               * 1000000 + datetime.microsecond)
\ No newline at end of file