in my error log files I read following over and over:
[Thu Feb 03 03:14:32 2011] [error] [client 64.246.165.200] mod_security: Access denied with code 500. Pattern match "SurveyBot" at HEADER("USER-AGENT") [hostname "mywebsite.be"] [uri "/nl/home"]
[Thu Feb 03 03:18:12 2011] [error] [client 64.246.161.190] mod_security: Access denied with code 500. Pattern match "SurveyBot" at HEADER("USER-AGENT") [hostname "mywebsite.com"] [uri "/en/home"]
on and on and on
What does this mean??
Should I be taking any actions?
This sounds like your web server's mod_security module denied access to a client that had the string "SurveyBot" in its USER_AGENT header.
Looks like just a rule to block useless robots - nothing to worry about, everything worked out as it was supposed to.
Edit: The rule indeed seems to be in mod_security's bad robots list.