diff --git a/models/user_mail.go b/models/user_mail.go
old mode 100644
new mode 100755
index af9602e71..7244ec378
--- a/models/user_mail.go
+++ b/models/user_mail.go
@@ -80,6 +80,18 @@ func GetEmailAddressByID(uid, id int64) (*EmailAddress, error) {
 	return email, nil
 }
 
+// GetEmailAddressByIDAndEmail gets a user's email address by ID and email
+func GetEmailAddressByIDAndEmail(uid int64, emailAddr string) (*EmailAddress, error) {
+	// User ID is required for security reasons
+	email := &EmailAddress{UID: uid, Email: emailAddr}
+	if has, err := x.Get(email); err != nil {
+		return nil, err
+	} else if !has {
+		return nil, nil
+	}
+	return email, nil
+}
+
 func isEmailActive(e Engine, email string, userID, emailID int64) (bool, error) {
 	if len(email) == 0 {
 		return true, nil
diff --git a/routers/repo/view.go b/routers/repo/view.go
index 5c116285f..945f6b0e0 100644
--- a/routers/repo/view.go
+++ b/routers/repo/view.go
@@ -590,20 +590,31 @@ func Home(ctx *context.Context) {
 		if err == nil && contributors != nil {
 			var contributorInfos []*ContributorInfo
 			for _, c := range contributors {
+				// get user info from committer email
 				user, err := models.GetUserByEmail(c.Email)
 				if err == nil {
+					// committer is system user, get info through user's primary email
 					existedContributorInfo := getContributorInfo(contributorInfos,user.Email)
 					if existedContributorInfo != nil {
+						// existed: same primary email, different committer name
 						existedContributorInfo.CommitCnt += c.CommitCnt
 					}else{
+						// new committer info
 						contributorInfos = append(contributorInfos, &ContributorInfo{
 							user, user.Email,c.CommitCnt,
 						})
 					}
 				} else {
-					contributorInfos = append(contributorInfos, &ContributorInfo{
-						nil, c.Email,c.CommitCnt,
-					})
+					// committer is not system user
+					existedContributorInfo := getContributorInfo(contributorInfos,c.Email)
+					if existedContributorInfo != nil {
+						// existed: same primary email, different committer name
+						existedContributorInfo.CommitCnt += c.CommitCnt
+					}else{
+						contributorInfos = append(contributorInfos, &ContributorInfo{
+							nil, c.Email,c.CommitCnt,
+						})
+					}
 				}
 			}
 			ctx.Data["ContributorInfo"] = contributorInfos
diff --git a/routers/user/auth.go b/routers/user/auth.go
index dd66fcb8b..13e338565 100755
--- a/routers/user/auth.go
+++ b/routers/user/auth.go
@@ -1266,6 +1266,15 @@ func Activate(ctx *context.Context) {
 			log.Error("Error storing session: %v", err)
 		}
 
+		email, err := models.GetEmailAddressByIDAndEmail(user.ID, user.Email)
+		if err != nil || email == nil{
+			log.Error("GetEmailAddressByIDAndEmail failed", ctx.Data["MsgID"])
+		} else {
+			if err := email.Activate(); err != nil {
+				log.Error("Activate failed: %v", err, ctx.Data["MsgID"])
+			}
+		}
+
 		ctx.Flash.Success(ctx.Tr("auth.account_activated"))
 		ctx.Redirect(setting.AppSubURL + "/")
 		return
diff --git a/routers/user/setting/profile.go b/routers/user/setting/profile.go
old mode 100644
new mode 100755
index d6f25f913..a385f2cac
--- a/routers/user/setting/profile.go
+++ b/routers/user/setting/profile.go
@@ -96,6 +96,18 @@ func ProfilePost(ctx *context.Context, form auth.UpdateProfileForm) {
 	ctx.User.Location = form.Location
 	ctx.User.Language = form.Language
 	ctx.User.Description = form.Description
+	isUsed, err := models.IsEmailUsed(form.Email)
+	if err != nil {
+		ctx.ServerError("IsEmailUsed", err)
+		return
+	}
+
+	if isUsed {
+		ctx.Flash.Error(ctx.Tr("form.email_been_used"))
+		ctx.Redirect(setting.AppSubURL + "/user/settings")
+		return
+	}
+
 	if err := models.UpdateUserSetting(ctx.User); err != nil {
 		if _, ok := err.(models.ErrEmailAlreadyUsed); ok {
 			ctx.Flash.Error(ctx.Tr("form.email_been_used"))
diff --git a/templates/repo/home.tmpl b/templates/repo/home.tmpl
index 7d632ea14..75cee742e 100644
--- a/templates/repo/home.tmpl
+++ b/templates/repo/home.tmpl
@@ -4,6 +4,48 @@
     font-size: 1.0em;
     margin-bottom: 1.0rem;
 }
+#contributorInfo > a:nth-child(n+25){
+	display:none;
+}
+#contributorInfo > a{
+	width: 2.0em;
+	float: left;
+	margin: .25em;
+}
+#contributorInfo > a.circular{
+	height: 2.0em;
+	padding: 0;
+	overflow: hidden;
+	letter-spacing:1.0em;
+	text-indent: 0.6em;
+	line-height: 2.0em;
+	text-transform:capitalize;
+	color: #FFF;
+}
+#contributorInfo > a.circular:nth-child(9n+1){
+	background-color: #4ccdec;
+}
+#contributorInfo > a.circular:nth-child(9n+2){
+	background-color: #e0b265;
+}
+#contributorInfo > a.circular:nth-child(9n+3){
+	background-color: #d884b7;
+}
+#contributorInfo > a.circular:nth-child(9n+4){
+	background-color: #8c6bdc;
+}
+#contributorInfo > a.circular:nth-child(9n+5){
+	background-color: #3cb99f;
+}
+#contributorInfo > a.circular:nth-child(9n+6){
+	background-color: #6995b9;
+}
+#contributorInfo > a.circular:nth-child(9n+7){
+	background-color: #ab91a7;
+}
+#contributorInfo > a.circular:nth-child(9n+8){
+	background-color: #bfd0aa;
+}
 </style>
 <div class="repository file list">
 	{{template "repo/header" .}}
@@ -193,17 +235,15 @@
 						<h4 class="ui header">
 							<strong>贡献者 ({{len .ContributorInfo}})</strong>
 							<div class="ui right">
-								<a class="text grey" href="">全部 {{svg "octicon-chevron-right" 16}}</a>
+								<a class="membersmore text grey" href="javascript:;">全部 {{svg "octicon-chevron-right" 16}}</a>
 							</div>
 						</h4>
-
-						<div class="ui members">
+						<div class="ui members" id="contributorInfo">
 							{{range .ContributorInfo}}
-								{{/*<img class="ui avatar image" src="{{.UserInfo.RelAvatarLink}}" alt=""/>&nbsp;&nbsp;<a href="{{AppSubUrl}}/{{.UserInfo.Name}}">{{.UserInfo.Name}}</a>*/}}
 								{{if .UserInfo}}
-									<a href="{{AppSubUrl}}/{{.UserInfo.Name}}"><img class="ui avatar image" src="{{.UserInfo.RelAvatarLink}}" alt=""/></a>
+									<a href="{{AppSubUrl}}/{{.UserInfo.Name}}"><img class="ui avatar image" src="{{.UserInfo.RelAvatarLink}}"></a>
 								{{else if .Email}}								    
-									<a href="mailto:{{.Email}}"><img class="ui avatar image" src="{{AvatarLink .Email}}" alt=""/></a>
+									<a href="mailto:{{.Email}}" class="circular ui button">{{.Email}}</a>
 								{{end}}
 							{{end}}
 						</div>						
@@ -215,4 +255,12 @@
 		
 	</div>
 </div>
+
+<script type="text/javascript">
+$(document).ready(function(){ 
+    $(".membersmore").click(function(){
+       $("#contributorInfo > a:nth-child(n+25)").show();
+    });
+});
+</script>
 {{template "base/footer" .}}