Database errors/possible hack!!

[محروم.كوم]

I hope someone here can please give me some advice. For a brief period of time today I got some sudden database errors....more than a 100. Looking at them:

mysql_connect() [function.mysql-connect]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
/home/thebull/public_html/forums/includes/class_core.php on line 311

MySQL Error :
Error Number :
Request Date : Thursday, January 21st 2010 @ 06:29:51 AM
Error Date : Thursday, January 21st 2010 @ 06:29:51 AM
Script : http://creativx.net/forums/attachmen...&thumb=1&stc=1
Referrer : http://windowsvn.net/forum/showthread.php?t=22009
IP Address : 123.20.2.128
Username :
Classname : vB_Database
MySQL Version :

I clicked on the Referrer link in the error shown above....On that forum I found almost all of my content of some of my forum!! How is this possible??
Can someone please tell me what this means!!??

Thank you very much! __DEFINE_LIKE_SHARE__