[squid-users] WARNING: unparseable HTTP header field {:: }

hi ,
is that harmfull log ??
====================================================================
2013/11/11 02:20:12 kid2| WARNING: unparseable HTTP header field {:: }
2013/11/11 02:20:13 kid1| ctx: exit level 0
2013/11/11 02:20:13 kid1| ctx: enter level 0:
'http://vap2iad3.lijit.com/www/delivery/lg.php?bannerid=38827&campaignid=232&cids=232&bids=38827&zoneid=220681&retarget_matches=null&tid=1075526134_220681_a90622ba5df04921Bd03a7abab3f6328&channel_ids=,&fpr=c874c715b2faad8885ad1254850d8d74&loc=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&referer=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&cb=78291847'
2013/11/11 02:20:13 kid1| WARNING: unparseable HTTP header field {:: }
2013/11/11 02:20:13 kid1| ctx: exit level 0
2013/11/11 02:20:13 kid1| ctx: enter level 0:
'http://vap2iad3.lijit.com/www/delivery/lg.php?bannerid=6573&campaignid=232&cids=232&bids=6573&zoneid=131033&retarget_matches=null&tid=711430930_131033_1820daa33ce9444aAf695c9465d9ea5a&channel_ids=,&fpr=c874c715b2faad8885ad1254850d8d74&loc=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&referer=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&cb=16754765'
2013/11/11 02:20:13 kid1| WARNING: unparseable HTTP header field {:: }
2013/11/11 02:20:13 kid2| ctx: exit level 0
2013/11/11 02:20:13 kid2| ctx: enter level 0:
'http://vap2iad3.lijit.com/www/delivery/lg.php?bannerid=38827&campaignid=232&cids=232&bids=38827&zoneid=220681&retarget_matches=null&tid=6614988552_220681_b6c5cff7d82042ccB86be4cfb6e8595e&channel_ids=,&fpr=c874c715b2faad8885ad1254850d8d74&loc=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&referer=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&cb=20837268'
2013/11/11 02:20:13 kid2| WARNING: unparseable HTTP header field {:: }
2013/11/11 02:20:13 kid2| ctx: exit level 0
2013/11/11 02:20:13 kid2| ctx: enter level 0:
'http://vap2iad3.lijit.com/www/delivery/lg.php?bannerid=6573&campaignid=232&cids=232&bids=6573&zoneid=131033&retarget_matches=null&tid=33051520_131033_4fd6080af4a846df8ba0ef5c3694d699&channel_ids=,&fpr=c874c715b2faad8885ad1254850d8d74&loc=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&referer=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&cb=33770260'
2013/11/11 02:20:13 kid2| WARNING: unparseable HTTP header field {:: }
2013/11/11 02:20:13 kid2| ctx: exit level 0
2013/11/11 02:20:13 kid2| ctx: enter level 0:
'http://vap2iad3.lijit.com/www/delivery/lg.php?bannerid=6573&campaignid=232&cids=232&bids=6573&zoneid=131033&retarget_matches=null&tid=133013941_131033_c61cb783eaab4af98630849e954798b2&channel_ids=,&fpr=c874c715b2faad8885ad1254850d8d74&loc=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&referer=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&cb=67402879'
2013/11/11 02:20:13 kid2| WARNING: unparseable HTTP header field {:: }
2013/11/11 02:20:13 kid2| ctx: exit level 0
2013/11/11 02:20:13 kid2| ctx: enter level 0:
'http://vap2iad3.lijit.com/www/delivery/lg.php?bannerid=38827&campaignid=232&cids=232&bids=38827&zoneid=220681&retarget_matches=null&tid=1952756553_220681_c5b7aec4567a4a65Bb1ef7ec7e718012&channel_ids=,&fpr=c874c715b2faad8885ad1254850d8d74&loc=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&referer=http%3A%2F%2Fforum.mobilism.org%2Fviewtopic.php%3Ff%3D1292%26t%3D652520&cb=08604172'
2013/11/11 02:20:13 kid2| WARNING: unparseable HTTP header field {:: }
===================================================================

regards

-----
Dr.x

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