Weird error in error.log

Hello. All of a sudden I’m getting lots of those errors in my error.log:
[Sat Apr 30 00:19:30 2011] [error] [client 187.66.73.150] admin_menu, referer: https://supersugoi.net/wp-admin/
[Sat Apr 30 00:19:36 2011] [error] [client xxx.xxx.xxx.xxx] admin_menu, referer: https://supersugoi.net/wp-admin/profile.php
[Sat Apr 30 00:19:37 2011] [error] [client xxx.xxx.xxx.xxx] admin_menu, referer: https://supersugoi.net/wp-admin/profile.php
[Sat Apr 30 00:19:48 2011] [error] [client xxx.xxx.xxx.xxx] admin_menu, referer: https://supersugoi.net/wp-admin/profile.php?updated=true
[Sat Apr 30 00:19:54 2011] [error] [client xxx.xxx.xxx.xxx] admin_menu, referer: https://supersugoi.net/wp-admin/options-general.php?page=fluency-options
[Sat Apr 30 00:20:01 2011] [error] [client xxx.xxx.xxx.xxx] admin_menu, referer: https://supersugoi.net/wp-admin/options-general.php?page=fluency-options
[Sat Apr 30 00:20:36 2011] [error] [client xxx.xxx.xxx.xxx] admin_menu, referer: https://supersugoi.net/wp-admin/options-general.php?page=fluency-options

Does anyone know what is going on?

The site url is, as seem in the log, https://supersugoi.net and I can provide access if someone is willing to take a look and help.

Thanks in advance.