diff --git a/api.go b/api.go
index 8746fb8..28a54bc 100644
--- a/api.go
+++ b/api.go
@@ -194,14 +194,13 @@ func apiPostAdd(c *gin.Context) {
 	if tag != "" {
 		tags = strings.Split(tag, ",")
 	}
-	t := CheckDate(date)
 	serieid := CheckSerieID(serie)
 	publish = CheckPublish(do)
 	artc := &Article{
 		Title:      title,
 		Content:    text,
 		Slug:       slug,
-		CreateTime: t,
+		CreateTime: CheckDate(date),
 		IsDraft:    !publish,
 		Author:     Ei.Username,
 		SerieID:    serieid,
@@ -222,16 +221,20 @@ func apiPostAdd(c *gin.Context) {
 		return
 	}
 	artc.ID = int32(cid)
-	if CheckBool(c.PostForm("update")) {
-		artc.UpdateTime = time.Now()
-	}
 	i, a := GetArticle(artc.ID)
 	if a != nil {
 		artc.IsDraft = false
 		artc.Count = a.Count
 		artc.UpdateTime = a.UpdateTime
+		Ei.Articles = append(Ei.Articles[0:i], Ei.Articles[i+1:]...)
+		DelFromLinkedList(a)
+		ManageTagsArticle(a, false, DELETE)
+		ManageSeriesArticle(a, false, DELETE)
+		ManageArchivesArticle(a, false, DELETE)
+		delete(Ei.MapArticles, a.Slug)
+		a = nil
 	}
-	if update != "" {
+	if CheckBool(update) {
 		artc.UpdateTime = time.Now()
 	}
 	err = UpdateArticle(bson.M{"id": artc.ID}, artc)
@@ -240,15 +243,6 @@ func apiPostAdd(c *gin.Context) {
 		return
 	}
 	if !artc.IsDraft {
-		if a != nil {
-			Ei.Articles = append(Ei.Articles[0:i], Ei.Articles[i+1:]...)
-			DelFromLinkedList(a)
-			ManageTagsArticle(a, false, DELETE)
-			ManageSeriesArticle(a, false, DELETE)
-			ManageArchivesArticle(a, false, DELETE)
-			delete(Ei.MapArticles, a.Slug)
-			a = nil
-		}
 		Ei.MapArticles[artc.Slug] = artc
 		Ei.Articles = append(Ei.Articles, artc)
 		sort.Sort(Ei.Articles)
diff --git a/back.go b/back.go
index 48679a2..4917842 100644
--- a/back.go
+++ b/back.go
@@ -61,7 +61,7 @@ func HandleLoginPost(c *gin.Context) {
 		return
 	}
 	if Ei.Username != user || !VerifyPasswd(Ei.Password, user, pwd) {
-		logd.Print("账号或密码错误", user, pwd)
+		logd.Printf("账号或密码错误 %s, %s", user, pwd)
 		c.Redirect(http.StatusFound, "/admin/login")
 		return
 	}
@@ -105,7 +105,7 @@ func HandlePost(c *gin.Context) {
 			h["Edit"] = artc
 		}
 	}
-	if h["Title"] == "" {
+	if h["Title"] == nil {
 		h["Title"] = "撰写文章 | " + Ei.BTitle
 	}
 	h["Path"] = c.Request.URL.Path
diff --git a/conf/app.yml b/conf/app.yml
index 7fd598c..ccea14b 100644
--- a/conf/app.yml
+++ b/conf/app.yml
@@ -3,7 +3,7 @@ runmode: prod
 # 回收箱保留48小时
 trash: -48
 # 定时清理回收箱，%d小时
-clean: 12
+clean: 1
 # 首页展示文章数量
 pagenum: 10
 # 管理界面
diff --git a/db.go b/db.go
index 111fa40..efcc1a1 100644
--- a/db.go
+++ b/db.go
@@ -73,7 +73,17 @@ func init() {
 	ms.Close()
 	ms, c = db.Connect(DB, COLLECTION_ARTICLE)
 	index = mgo.Index{
-		Key:        []string{"id", "slug"},
+		Key:        []string{"id"},
+		Unique:     true,
+		DropDups:   true,
+		Background: true,
+		Sparse:     true,
+	}
+	if err := c.EnsureIndex(index); err != nil {
+		logd.Fatal(err)
+	}
+	index = mgo.Index{
+		Key:        []string{"slug"},
 		Unique:     true,
 		DropDups:   true,
 		Background: true,
@@ -461,6 +471,7 @@ func AddToLinkedList(id int32) {
 		artc.Prev = Ei.Articles[i-1]
 		if Ei.Articles[i-1].Next != nil {
 			artc.Next = Ei.Articles[i-1].Next
+			Ei.Articles[i-1].Next.Prev = artc
 		}
 		Ei.Articles[i-1].Next = artc
 	}
diff --git a/views/admin/profile.html b/views/admin/profile.html
index 57f8b56..39d0133 100644
--- a/views/admin/profile.html
+++ b/views/admin/profile.html
@@ -23,7 +23,7 @@
                                 个人邮箱</label>
                             <input id="info-0-1" name="email" type="text" class="text" value="{{.Email}}" />
                             <p class="description">
-                                用于发送告警邮件及其它通知, 建议填写, 如: example#163.com.</p>
+                                用于发送告警邮件及其它通知, 建议填写, 如: example@163.com.</p>
                         </li>
                     </ul>
                     <ul class="typecho-option">