Torrents help please

[onlinejalsa]

Hello sir,

from past 2 days i,m facing a peculiar problem

none of my users ratio have been updating and in torrent status i,m getting the following error

No Connection Could be Made because the target machine actively refused it


and in my memberslist.php i,m getting the following error

Database error in vBulletin 3.6.8:

Invalid SQL:
SELECT SUM(upspeed) as ulspeedtot ,SUM(downspeed) as dlspeedtot, useragent as useragent FROM peers WHERE uid = '6';

MySQL Error : Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
Error Number : 1140
Date : Thursday, August 14th 2008 @ 09:50:54 AM
Script : http://www.tollytorrents.com/memberlist.php
Referrer :
IP Address : 24.35.33.232.11
Username : mainlist
Classname : vB_Database


none of my torrents are working . i have replaced the original members list file as well but the same error is continuing. kindly please help me