127.0.0.1 - - [13/Sep/2004:19:40:24 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1452251895@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:40:32 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1202791330@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:44:47 -0500] "GET /EN_US HTTP/1.1" 404 293
127.0.0.1 - - [13/Sep/2004:19:45:08 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1674775098@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:45:16 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1450542148@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:45:30 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1419879547@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:45:56 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1473610312@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:46:02 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1260315593@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:47:02 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1464648665@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:47:09 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1958053574@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:49:36 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1805788112@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:49:47 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1360026745@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:50:38 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1679362389@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:50:41 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1114223290@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:52:42 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1506155974@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:52:49 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1484403274@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:52:53 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1763027985@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:57:21 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1903461640@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:57:29 -0500] "GET /EN_US HTTP/1.1" 404 293
127.0.0.1 - - [13/Sep/2004:19:57:39 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1833081826@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:57:45 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1288332414@336x280,468x60-2? HTTP/1.1" 404 407
127.0.0.1 - - [13/Sep/2004:19:57:55 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1348123877@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:19:58:41 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1539640384@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420

127.0.0.1 - - [13/Sep/2004:20:02:24 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1645807987@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420
127.0.0.1 - - [13/Sep/2004:20:03:20 -0500] "GET /RealMedia/ads/adstream_mjx.ads/intm/it/www.enterpriseitplanet.com/security/antionline/1158074186@336x280,468x60-2,house_ribbon? HTTP/1.1" 404 420

Plenty more where that came from.. is it normal or ? (Those are Apache 2 logs.)