Security log question

Hi AITpro.

Just a query regarding my security log entries.
The log is getting full of these kinds of entries:

REMOTE_ADDR: 192.99.6.109
Host Name: ns4010158.ip-192-99-6.net
SERVER_PROTOCOL: HTTP/1.1
HTTP_CLIENT_IP:
HTTP_FORWARDED:
HTTP_X_FORWARDED_FOR: 192.99.6.109
HTTP_X_CLUSTER_CLIENT_IP:
REQUEST_METHOD: GET
HTTP_REFERER: https://www.mysite.com/
REQUEST_URI: /?x=0&y=0&s=Search+in+site...
QUERY_STRING:
HTTP_USER_AGENT: Mozilla/5.0 (Windows NT 5.1; rv:5.0.1) Gecko/20100101 Firefox/5.0.1

REMOTE_ADDR: 27.150.210.56
Host Name: 27.150.210.56
SERVER_PROTOCOL: HTTP/1.1
HTTP_CLIENT_IP:
HTTP_FORWARDED:
HTTP_X_FORWARDED_FOR: 27.150.210.56
HTTP_X_CLUSTER_CLIENT_IP:
REQUEST_METHOD: GET
HTTP_REFERER: https://www.mysite.com/wp-signup.php
REQUEST_URI: /?x=0&y=0&s=Search+in+site...
QUERY_STRING:
HTTP_USER_AGENT: Mozilla/5.0 (Windows NT 6.0) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.112 Safari/535.1

Note the request URI: /?x=0&y=0&s=Search+in+site…
It’s clear that I don’t want this kind of traffic – looks dodgy to me?

I do seem to be getting a significant number of failed login entries (as reported by better WP Security – sorry, I don’t use Bulletproof for that at this point). 100’s a day now…

Have you seen this before?
Should I just block the IP’s in .htaccess file?

Thanks

http://wordpress.org/plugins/bulletproof-security/