[squid-users] Strange entries from my log

I'm running 3.4.x with c-icap, and every now and then I'm seeing this
in my log:

Oct 14 09:06:47 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:07:12 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:07:21 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:07:51 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:07:55 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:08:08 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:08:12 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:08:51 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:08:51 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:09:15 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:10:05 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:13:26 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:14:28 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:16:55 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:17:14 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:17:53 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:17:58 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: c-69-250-37-253.hsd1.dc.comcast.net#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:18:44 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: catv-83-157.rkocom.ch#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:19:41 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: hsi-kbw-149-172-240-158.hsi13.kabel-badenwuerttemberg.de#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:20:31 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: catv-83-157.rkocom.ch#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:21:58 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: 178-84-159-76.dynamic.upc.nl#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:22:07 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: 178-84-159-76.dynamic.upc.nl#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:22:22 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: 178-84-159-76.dynamic.upc.nl#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:33:10 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: rrcs-64-183-63-20.west.biz.rr.com#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:33:10 proxy-cvk-1 squid[12081]: internalStart: unknown request:#012GET /squid-internal-static/icons/silk/arrow_up.png HTTP/1.1#015#012Host: rrcs-64-183-63-20.west.biz.rr.com#015#012User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0#015#012Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8#015#012Accept-Language: en-US,en;q=0.5#015#012Accept-Encoding: gzip, deflate#015#012Connection: keep-alive#015#012#015#012
Oct 14 09:44:15 proxy-cvk-1 squid[12081]: helperHandleRead: unexpected read from redirector #1, 1 bytes '#012'

Do you have any ide what this might be?

-- 
Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
ralf.hildebrandt_at_charite.de        Campus Benjamin Franklin
http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
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