[squid-users] problem with version 3.1.20

I compiled under RedHat 6.2 version of squid 3.1.15 that works fine

but when I compiled the new version 3.1.20, I got a drop in the
authentication phase of the process

2012/07/19 09:55:54.906| authenticateValidateUser: Validating Auth_user
request '0x7f93d218bc00'.
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
FATAL: Received Segment Violation...dying.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2012/07/19 09:55:54.906| storeDirWriteCleanLogs: Starting...
2012/07/19 09:55:54.906| file_open: FD 14
2012/07/19 09:55:54.906| fd_open() FD 14 /var/spool/squid/swap.state.clean
2012/07/19 09:55:54.906| storeDirWriteCleanLogs: opened
/var/spool/squid/swap.state.clean, FD 14
2012/07/19 09:55:54.906| cbdataFree: 0x7f93d218dd48
2012/07/19 09:55:54.906| cbdataFree: Freeing 0x7f93d218dd48
2012/07/19 09:55:54.906| file_close: FD 8 really closing

2012/07/19 09:55:54.906| fd_close FD 8 /var/spool/squid/swap.state
2012/07/19 09:55:54.906| commSetSelect(FD
8,type=1,handler=0,client_data=0,timeout=0)
2012/07/19 09:55:54.906| commSetSelect(FD
8,type=2,handler=0,client_data=0,timeout=0)
2012/07/19 09:55:54.906| Cache Dir #0 log closed on FD 8
2012/07/19 09:55:54.906| xrename: renaming
/var/spool/squid/swap.state.clean to /var/spool/squid/swap.state
2012/07/19 09:55:54.906| file_open: FD 8
2012/07/19 09:55:54.906| fd_open() FD 8
/var/spool/squid/swap.state.last-clean
2012/07/19 09:55:54.906| file_close: FD 8 really closing

2012/07/19 09:55:54.906| fd_close FD 8
/var/spool/squid/swap.state.last-clean
2012/07/19 09:55:54.906| commSetSelect(FD
8,type=1,handler=0,client_data=0,timeout=0)
2012/07/19 09:55:54.906| commSetSelect(FD
8,type=2,handler=0,client_data=0,timeout=0)
2012/07/19 09:55:54.906| file_close: FD 14 really closing

2012/07/19 09:55:54.906| fd_close FD 14 /var/spool/squid/swap.state.clean
2012/07/19 09:55:54.906| commSetSelect(FD
14,type=1,handler=0,client_data=0,timeout=0)
2012/07/19 09:55:54.906| commSetSelect(FD
14,type=2,handler=0,client_data=0,timeout=0)
2012/07/19 09:55:54.906| Finished. Wrote 176 entries.
2012/07/19 09:55:54.906| Took 0.00 seconds (442211.06 entries/sec).
CPU Usage: 8.012 seconds = 3.643 user + 4.368 sys
Maximum Resident Size: 178016 KB
Page faults with physical i/o: 1
Memory usage for squid via mallinfo():
        total space in arena: 3456 KB
        Ordinary blocks: 3399 KB 8 blks
        Small blocks: 0 KB 10 blks
        Holding blocks: 137884 KB 10 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 56 KB
        Total in use: 141283 KB 4088%
        Total free: 56 KB 2%

I use NTLM authorization with ActiveDirectory

Both versions comiled with options:

]# squid -v
Squid Cache: Version 3.1.20
configure options: '--host=x86_64-unknown-linux-gnu'
'--build=x86_64-unknown-linux-gnu' '--program-prefix=' '--prefix=/usr'
'--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin'
'--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include'
'--libdir=/usr/lib64' '--libexecdir=/usr/libexec'
'--sharedstatedir=/var/lib' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--exec_prefix=/usr'
'--libexecdir=/usr/lib64/squid' '--localstatedir=/var'
'--datadir=/usr/share/squid' '--sysconfdir=/etc/squid'
'--with-logdir=$(localstatedir)/log/squid'
'--with-pidfile=$(localstatedir)/run/squid.pid'
'--disable-dependency-tracking' '--enable-arp-acl'
'--enable-follow-x-forwarded-for'
'--enable-auth=basic,digest,ntlm,negotiate'
'--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SMB,YP,getpwnam,multi-domain-NTLM,SASL,DB,POP3,squid_radius_auth'
'--enable-ntlm-auth-helpers=smb_lm,no_check,fakeauth'
'--enable-digest-auth-helpers=password,ldap,eDirectory'
'--enable-negotiate-auth-helpers=squid_kerb_auth'
'--enable-external-acl-helpers=ip_user,ldap_group,session,unix_group,wbinfo_group'
'--enable-cache-digests' '--enable-cachemgr-hostname=localhost'
'--enable-delay-pools' '--enable-epoll' '--enable-icap-client'
'--enable-ident-lookups' '--enable-linux-netfilter' '--enable-referer-log'
'--enable-removal-policies=heap,lru' '--enable-snmp' '--enable-ssl'
'--enable-storeio=aufs,diskd,ufs' '--enable-useragent-log'
'--enable-wccpv2' '--enable-esi' '--with-aio' '--with-default-user=squid'
'--with-filedescriptors=262144' '--with-dl' '--with-openssl'
'--with-pthreads' '--disable-optimizations'
'build_alias=x86_64-unknown-linux-gnu'
'host_alias=x86_64-unknown-linux-gnu' 'CFLAGS=-O2 -g -fpie' 'LDFLAGS=-pie'
'CXXFLAGS=-O2 -g -fpie'
--with-squid=/home/asmyasni/src/rpm/BUILD/squid-3.1.20

no coredumps appears
I can't debug this problem

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