problem with named-sdb DLZ with mysql

[fddi]

hello I am running named with sdb support on CentOS 6.4

here are the componetns I Am using

bind-9.8.2-0.17.rc1.el6_4.4.x86_64
bind-utils-9.8.2-0.17.rc1.el6_4.4.x86_64
bind-libs-9.8.2-0.17.rc1.el6_4.4.x86_64
bind-sdb-9.8.2-0.17.rc1.el6_4.4.x86_64
bind-chroot-9.8.2-0.17.rc1.el6_4.4.x86_64

mysql-5.1.67-1.el6_3.x86_64
mysql-server-5.1.67-1.el6_3.x86_64
mysql-libs-5.1.67-1.el6_3.x86_64


the configuration is a standard DLZ configuration for mysql

everything seems to work fine but after 2 weeks of running this problem 
always accours


Apr 17 12:24:17 ns2 kernel: named-sdb[3890]: segfault at c8 ip 
00007f842ae04df2 sp 00007f84261f9530 error 4 in 
libmysqlclient.so.16.0.0[7f842adaf000+136000]
Apr 17 12:24:17 ns2 kernel: named-sdb[3892]: segfault at 0 ip 
00007f842914a831 sp 00007f8424df7548 error 6 in 
libc-2.12.so[7f84290c1000+18a000]


so it looks not so stable...


anyone have this problem ?

thank you

Rick