httpd.conf error at boot

Can any one help please? I am running 7 on dell notebook. Have just booted and spotted error message: "syntax error on httpd.conf" This was not there this morning and I haven't been anywhere near httpd.conf (as I know nil about it). Any suggestions as to where I should start to look? I have looked through most of /var looking for messages etc with today's date and found nothing which seemed remotely relevant (apart from the fact that quake seems to be looking for music files on my hard-drive - which is amusing but hardly relevant). Many thanks Francesco