I'm getting a few entries like this :

[Sun Jul 11 15:06:43 2004] [error] [client 207.46.98.60] File does not exist: /www/m/y/mysterystudio.com/htdocs/info.php[id]ps[SiteID]simtel.net

info.php[id]ps[SiteID]simtel.net is not valid, but info.php?id=ps&SiteID=simtel.net is; any idea why or what can be mangling the URLs that way?