diff --git a/bbs/delete.php b/bbs/delete.php
index 9d38fda5e..b2df50c36 100644
--- a/bbs/delete.php
+++ b/bbs/delete.php
@@ -79,8 +79,22 @@ while ($row = sql_fetch_array($result))
         // 업로드된 파일이 있다면 파일삭제
         $sql2 = " select * from {$g4['board_file_table']} where bo_table = '$bo_table' and wr_id = '{$row['wr_id']}' ";
         $result2 = sql_query($sql2);
-        while ($row2 = sql_fetch_array($result2))
+        while ($row2 = sql_fetch_array($result2)) {
             @unlink(G4_DATA_PATH.'/file/'.$bo_table.'/'.$row2['bf_file']);
+            // 썸네일삭제
+            $dir = G4_DATA_PATH.'/file/'.$bo_table;
+            if($dh = opendir($dir)) {
+                while(($file = readdir($dh)) !== false) {
+                    if($file == "." || $file == "..")
+                        continue;
+
+                    $filename = preg_replace("/\.[^\.]+$/i", "", $row2['bf_file']);
+                    if(strstr($file, $filename) && strpos($file, $filename) != 0) {
+                        @unlink($dir.'/'.$file);
+                    }
+                }
+            }
+        }
 
         // 파일테이블 행 삭제
         sql_query(" delete from {$g4['board_file_table']} where bo_table = '$bo_table' and wr_id = '{$row['wr_id']}' ");
@@ -121,7 +135,5 @@ if ($count_write > 0 || $count_comment > 0)
 
 @include_once($board_skin_path.'/delete.tail.skin.php');
 
-delete_cache_latest($bo_table);
-
 goto_url('./board.php?bo_table='.$bo_table.'&page='.$page.$qstr);
 ?>
diff --git a/bbs/delete_all.php b/bbs/delete_all.php
index 06ae7bfbf..de4d0905e 100644
--- a/bbs/delete_all.php
+++ b/bbs/delete_all.php
@@ -90,10 +90,25 @@ for ($i=count($tmp_array)-1; $i>=0; $i--)
             // 업로드된 파일이 있다면
             $sql2 = " select * from {$g4['board_file_table']} where bo_table = '$bo_table' and wr_id = '{$row['wr_id']}' ";
             $result2 = sql_query($sql2);
-            while ($row2 = sql_fetch_array($result2))
+            while ($row2 = sql_fetch_array($result2)) {
                 // 파일삭제
                 @unlink(G4_DATA_PATH.'/file/'.$bo_table.'/'.$row2['bf_file']);
 
+                // 썸네일삭제
+                $dir = G4_DATA_PATH.'/file/'.$bo_table;
+                if($dh = opendir($dir)) {
+                    while(($file = readdir($dh)) !== false) {
+                        if($file == "." || $file == "..")
+                            continue;
+
+                        $filename = preg_replace("/\.[^\.]+$/i", "", $row2['bf_file']);
+                        if(strstr($file, $filename) && strpos($file, $filename) != 0) {
+                            @unlink($dir.'/'.$file);
+                        }
+                    }
+                }
+            }
+
             // 파일테이블 행 삭제
             sql_query(" delete from {$g4['board_file_table']} where bo_table = '$bo_table' and wr_id = '{$row['wr_id']}' ");
 
diff --git a/css/adm.css b/css/adm.css
index 3baf5cf6e..b89ead4f0 100644
--- a/css/adm.css
+++ b/css/adm.css
@@ -66,14 +66,14 @@ h2 {font-size:1.2em}
 .gnb_js {}
 .gnb_js ul {zoom:1}
 .gnb_js ul:after {display:block;visibility:hidden;clear:both;content:""}
-.gnb_js .gnb_1depth {position:relative;float:left;margin-left:-1px;border:1px solid #222;border-top:0;border-bottom:0}
+.gnb_js .gnb_1depth {position:relative;float:left;margin-left:-1px;width:90px;border:1px solid #222;border-top:0;border-bottom:0}
 .gnb_js .gnb_1depth a {display:inline-block;float:none;width:90px;height:35px;color:#e0e0e0;font-weight:bold;text-align:center}
 .gnb_js .gnb_1depth_air a {float:none;background:#f7f7f2;color:#000}
 .gnb_js .gnb_1depth_on a {float:none;background:#fff;color:#000}
 .gnb_js .gnb_1depth a:focus,
 .gnb_js .gnb_1depth a:hover,
 .gnb_js .gnb_1depth a:active {text-decoration:none}
-.gnb_js .gnb_1depth ul {width:0px;height:0px;overflow:hidden}
+.gnb_js .gnb_1depth ul {width:0;height:0;overflow:hidden}
 .gnb_js .gnb_1depth li {float:none}
 .gnb_js .gnb_1depth_over ul {position:absolute;top:35px;left:-1px;width:181px;height:auto;border:1px solid #ccc;border-top:0}
 .gnb_js .gnb_2depth a {display:inline-block;margin:0;padding:5px 10px;width:161px;height:25px;border-bottom:0;background:#fff;color:#000;font-weight:normal;text-align:left;line-height:2.1em}
diff --git a/lib/thumbnail.lib.php b/lib/thumbnail.lib.php
index 250615dc8..ebd9b4d79 100644
--- a/lib/thumbnail.lib.php
+++ b/lib/thumbnail.lib.php
@@ -98,7 +98,7 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
         @chmod($target_path, 0707);
     }
 
-    $thumb_file = "$target_path/{$thumb_filename}_{$thumb_width}x{$thumb_height}.png";
+    $thumb_file = "$target_path/thumb-{$thumb_filename}_{$thumb_width}x{$thumb_height}.png";
     $thumb_time = @filemtime($thumb_file);
     $source_file = "$source_path/$filename";
     $source_time = @filemtime($source_file);
@@ -112,7 +112,7 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
     // 이미지 파일이 없거나 아님
     if (!$size[0]) {
         if (!$thumb_height) $thumb_height = $thumb_width;
-        $thumb_file = "$target_path/noimg_{$thumb_width}x{$thumb_height}.png";
+        $thumb_file = "$target_path/thumb-noimg_{$thumb_width}x{$thumb_height}.png";
         if (!file_exists($thumb_file)) {
             $target = imagecreate($thumb_width, $thumb_height);
             imagecolorallocate($target, 250, 250, 250);