屏蔽“您目前使用的Discuz!程序有新版本发布,请及时升级!”提示

在/discuz/source/admincp目录下找到文件:admincp_main.php

找到第49行:

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if($_G['uid'] && $_G['member']['allowadmincp'] == 1 && !$shownotice && $_G['setting']['upgrade']) {  
$shownotice = '<div class="notice"><a href="'.$basescript.'?action=upgrade" id="notice">'.$lang['upgrade_right_now'].'</a></div>';
}
if($_G['uid'] && $_G['member']['allowadmincp'] == 1 && !isset($_G['cookie']['checkupgrade'])) {
$discuz_upgrade = new discuz_upgrade();
if($discuz_upgrade->check_upgrade()) {
if(empty($shownotice)) {
$shownotice = '<div class="notice"><a href="'.$basescript.'?action=upgrade" id="notice">'.$lang['upgrade_right_now'].'</a></div>';
}
}
dsetcookie('checkupgrade', 1, 7200);
}

把这一段注释掉即可。