diff -ur typo3_src-4.0.1.orig/typo3/sysext/beuser/mod/index.php typo3_src-4.0.1/typo3/sysext/beuser/mod/index.php
--- typo3_src-4.0.1.orig/typo3/sysext/beuser/mod/index.php	2006-07-31 13:51:38.000000000 +0200
+++ typo3_src-4.0.1/typo3/sysext/beuser/mod/index.php	2006-09-03 19:29:54.000000000 +0200
@@ -1355,10 +1355,13 @@
 				$uListArr=array();
 				reset($dat['users']);
 				while(list(,$uDat)=each($dat['users']))	{
-					$uListArr[] = '<tr><td width="130">'.t3lib_iconWorks::getIconImage('be_users',$uDat,$GLOBALS['BACK_PATH'],'align="top" title="'.$uDat['uid'].'"').$this->linkuser($uDat['username'],$uDat).'&nbsp;&nbsp;</td><td nowrap="nowrap">'.$this->elementLinks('be_users',$uDat).
-						'<a href="'.t3lib_div::linkThisScript(array('SwitchUser'=>$uDat['uid'])).'" target="_top"><img '.t3lib_iconWorks::skinImg($GLOBALS['BACK_PATH'],'gfx/su.gif').' border="0" align="top" title="'.htmlspecialchars('Switch user to: '.$uDat['username']).' [change-to mode]" alt="" /></a>'.
-						'<a href="'.t3lib_div::linkThisScript(array('SwitchUser'=>$uDat['uid'], 'switchBackUser' => 1)).'" target="_top"><img '.t3lib_iconWorks::skinImg($GLOBALS['BACK_PATH'],'gfx/su_back.gif').' border="0" align="top" title="'.htmlspecialchars('Switch user to: '.$uDat['username']).' [switch-back mode]" alt="" /></a>'.
-						'</td></tr>';
+					$uItem = '<tr><td width="130">'.t3lib_iconWorks::getIconImage('be_users',$uDat,$GLOBALS['BACK_PATH'],'align="top" title="'.$uDat['uid'].'"').$this->linkuser($uDat['username'],$uDat).'&nbsp;&nbsp;</td><td nowrap="nowrap">'.$this->elementLinks('be_users',$uDat);
+					if (!$uDat['disable'] && ($uDat['starttime'] == 0 || $uDat['starttime'] < time()) && ($uDat['endtime'] == 0 || $uDat['endtime'] > time()))	{
+						$uItem .= '<a href="'.t3lib_div::linkThisScript(array('SwitchUser'=>$uDat['uid'])).'" target="_top"><img '.t3lib_iconWorks::skinImg($GLOBALS['BACK_PATH'],'gfx/su.gif').' border="0" align="top" title="'.htmlspecialchars('Switch user to: '.$uDat['username']).' [change-to mode]" alt="" /></a>'.
+							'<a href="'.t3lib_div::linkThisScript(array('SwitchUser'=>$uDat['uid'], 'switchBackUser' => 1)).'" target="_top"><img '.t3lib_iconWorks::skinImg($GLOBALS['BACK_PATH'],'gfx/su_back.gif').' border="0" align="top" title="'.htmlspecialchars('Switch user to: '.$uDat['username']).' [switch-back mode]" alt="" /></a>';
+					}
+					$uItem .= '</td></tr>';
+					$uListArr[] = $uItem;
 				}
 				$allCells['USERS'] = '<table border="0" cellspacing="0" cellpadding="0" width="100%">'.implode('',$uListArr).'</table>';