[9.100][BUG] Http messages error...

After the update, the number of error messages to the proxy increased very ... this is normal behavior or bug?

tunnel_handler_recv_data" file="tunnel.c" line="45" message="epoll_fill_buffer: Connection reset by peer"
2013:04:26-11:42:55 secg97 httpproxy[5603]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0x1872ac38" function="ssl_raw_read" file="ssl.c" line="581" message="SSL_ERROR_SYSCALL: ret=-1 error=Connection reset by peer"
2013:04:26-11:42:55 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="CONNECT" srcip="192.168.3.59" dstip="" user="silvia.helena" statuscode="200" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="0" request="0x1872ac38" url="platform.twitter.com/" exceptions="certcheck,certdate" error=""
2013:04:26-11:42:55 secg97 httpproxy[5603]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0x189da7d8" function="ssl_raw_read" file="ssl.c" line="581" message="SSL_ERROR_SYSCALL: ret=-1 error=Connection reset by peer"
2013:04:26-11:42:55 secg97 httpproxy[5603]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0x18ae50d0" function="ssl_raw_read" file="ssl.c" line="581" message="SSL_ERROR_SYSCALL: ret=-1 error=Connection reset by peer"
2013:04:26-11:42:55 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="POST" srcip="192.168.3.239" dstip="192.150.14.174" user="" statuscode="200" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="2" request="0x18fe69d8" url="hl2rcv.adobe.com/.../html" application="adobe"
2013:04:26-11:42:55 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="192.168.2.51" dstip="199.16.156.8" user="daniel.gurgel" statuscode="200" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="2" request="0x1a57e998" url="api.twitter.com/.../json" application="twitter"
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="192.168.2.191" dstip="23.60.5.186" user="luciana.lima" statuscode="200" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="190923" request="0x15766ce0" url="bay172.mail.live.com/default.aspx
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="192.168.2.111" dstip="200.233.70.240" user="" statuscode="200" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="1332" request="0x18436c90" url="ssl.secrel.com.br/.../iframe_avisos.asp
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="192.168.2.111" dstip="200.233.70.240" user="" statuscode="304" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="0" request="0x18693cd8" url="ssl.secrel.com.br/.../quadro.css" exceptions="av,auth,content,url,ssl,certcheck,certdate,mime,cache,fileextension" error=""
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="192.168.2.111" dstip="200.233.70.240" user="" statuscode="304" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="0" request="0x18693cd8" url="ssl.secrel.com.br/.../moveDiv.js" exceptions="av,auth,content,url,ssl,certcheck,certdate,mime,cache,fileextension" error=""
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="192.168.2.111" dstip="200.233.70.240" user="" statuscode="304" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="0" request="0x18693cd8" url="ssl.secrel.com.br/.../js.js" exceptions="av,auth,content,url,ssl,certcheck,certdate,mime,cache,fileextension" error=""
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0x9b967c0" function="tunnel_handler_recv_data" file="tunnel.c" line="45" message="epoll_fill_buffer: Connection timed out"
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0002" severity="info" sys="SecureWeb" sub="http" name="web request blocked" action="block" method="CONNECT" srcip="192.168.3.239" dstip="74.125.137.125" user="" statuscode="500" cached="0" profile="REF_HttProAcessGeral (Acesso Geral)" filteraction="REF_HttCffAcessAtend (Acesso Geral)" size="72" request="0x9b967c0" url="talk.google.com/" exceptions="auth,content,url,ssl,certcheck,certdate,cache" error="Connection timed out"
2013:04:26-11:42:56 secg97 httpproxy[5603]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0x197f2390" function="adir_auth_process_negotiate" file="auth_adir.c" line="1105" message="gss_accept_sec_context: An unsupported mechanism was requestedNo error"
2013:04:26-11:45:29 secg97 httpproxy[15397]: id="0003" severity="info" sys="SecureWeb" sub="http" request="0x18699398" function="ssl_connect" file="ssl.c" line="1300" message="ssl_handshake: Input/output error"