I'm getting a lot of entries in my error_log from memcache throwing a 404 and sending the request to the back end.

2010/04/08 21:07:50 [alert] 29914#0: *3207 pcre_exec() failed: -8 on "example.com" using "" while sending to client, client: 66.249.71.23, server: _, request: "GET example.com HTTP/1.1", upstream: "memcached://127.0.0.1:11211", host: "example.com"

I'm assuming this is correct behavior since it cannot find the requested url in memory; however, I have not been able to find any error level descriptions in the docs - could you either fill me in on what level I need to include on my conf file or point me in the direction of where this info can be found?

I'm looking to remove the "alert" log events to try and clean up my error_log a bit.

Thank you

Flash