First off I have to say this isn't a problem with the server because it happened on another host too.
Right the problem is basically in the screenshot I've attached. As you can see that is alot of heavy rubbish being dumped on the server by SMF. This also includes a error_log which contains -
[05-Nov-2008 12:52:46] PHP Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ',' or ';' in /home/tvlicen1/public_html/forum/Sources/Load.php(1932) : eval()'d code on line 437
[05-Nov-2008 12:52:50] PHP Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ',' or ';' in /home/tvlicen1/public_html/forum/Sources/Load.php(1932) : eval()'d code on line 437
[05-Nov-2008 12:55:17] PHP Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ',' or ';' in /home/tvlicen1/public_html/forum/Sources/Load.php(1932) : eval()'d code on line 438
[05-Nov-2008 12:55:47] PHP Parse error: syntax error, unexpected '<' in /home/tvlicen1/public_html/forum/Sources/Load.php(1932) : eval()'d code on line 534