Воркеры падают в sf

[Andrew Velikoredchanin]

linux x86_64, ядро 2.6.18-5.27.bbel4smp, дистр на основе RHEL4. nginx 
0.5.10 скомпилен под x86_64 с такими параметрами:
./configure --with-http_stub_status_module --with-http_flv_module 
--with-imap --with-imap_ssl_module --with-http_ssl_module 
--without-http_geo_module --without-http_fastcgi_module 
--with-cc-opt="-I /usr/include/pcre -I /usr/include/openssl" --with-debug

В /var/log/messages вижу много сообщений вот такого типа:

На одном сервере:

Jan 28 21:27:35 ncluster2 kernel: nginx[4592]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:35 ncluster2 kernel: nginx[14550]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[821]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[24920]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[29911]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[24622]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[22163]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[14332]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4
Jan 28 21:27:36 ncluster2 kernel: nginx[4585]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fffff404760 error 4

На другом сервере:

Jan 28 22:50:55 ncluster1 kernel: nginx[24782]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fff0b395760 error 4
Jan 28 22:50:55 ncluster1 kernel: nginx[24218]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fff0b395760 error 4
Jan 28 22:50:55 ncluster1 kernel: nginx[12268]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fff0b395760 error 4
Jan 28 22:50:55 ncluster1 kernel: nginx[13474]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fff0b395760 error 4
Jan 28 22:50:55 ncluster1 kernel: nginx[30014]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fff0b395760 error 4
Jan 28 22:50:55 ncluster1 kernel: nginx[10094]: segfault at 
0000000000000189 rip 000000000041b61f rsp 00007fff0b395760 error 4

Момент падения пока не удается привязать к конкретному событию.