I tried to MU using this tutorials
http://wpveda.com/how-to-enable-multiple-site-network-option-in-wordpress-3-0/
Now I get the error Parse error: syntax error, unexpected $end in /home/******/public_html/my_site.com/wp-config.php on line 1
I tried to put the old file back. Still the same problem. I can't even access wp-admin
I have wp-cache plugin. Is this why I can't get it back? Should I wait till the cache clears?