Thank you very much for your reply, , Skip
Actually both sites have the same PHP memory limits: 64MB
I have saved the sever/version info from 2 sites into 2 files, and then compared by winmerger, below is the difference:
production site / free site:
Server OS: Linux 2.6.32-279.14.1.el6.x86_64
Server OS: Linux 2.6.18-238.19.1.el5PAE
Database Data Size: 11,798 kB
Database Data Size: 1,423 kB
Database Index Size: 2,399 kB
Database Index Size: 1,171 kB
Configure Command './configure' '--with-libdir=lib' '--enable-cgi'
Configure Command './configure' '--enable-fastcgi'
auto_prepend_file no value no value
auto_prepend_file /..../protect.php /..../protect.php
register_argc_argv On On
register_argc_argv Off Off
------------------------------
apc
APC Support enabled
Version 3.1.9
APC Debugging Disabled
MMAP Support Enabled
MMAP File Mask no value
Locking type pthread mutex Locks
Serialization Support php
Revision $Revision: 308812 $
Directive Local Value Master Value
apc.cache_by_default On On
apc.canonicalize On On
apc.coredump_unmap Off Off
apc.enable_cli Off Off
apc.enabled On On
apc.file_md5 Off Off
apc.file_update_protection 2 2
apc.filters no value no value
apc.gc_ttl 3600 3600
apc.include_once_override Off Off
apc.lazy_classes Off Off
apc.lazy_functions Off Off
apc.max_file_size 1M 1M
apc.mmap_file_mask no value no value
apc.num_files_hint 1000 1000
apc.preload_path no value no value
apc.report_autofilter Off Off
apc.rfc1867 Off Off
apc.rfc1867_freq 0 0
apc.rfc1867_name APC_UPLOAD_PROGRESS APC_UPLOAD_PROGRESS
apc.rfc1867_prefix upload_ upload_
apc.rfc1867_ttl 3600 3600
apc.serializer default default
apc.shm_segments 1 1
apc.shm_size 32M 32M
apc.slam_defense On On
apc.stat On On
apc.stat_ctime Off Off
apc.ttl 0 0
apc.use_request_time On On
apc.user_ttl 0 0
apc.write_lock On On
-----------------------------
cURL Information libcurl/7.19.7 NSS/3.13.1.0 zlib/1.2.3 libidn/1.18 libssh2/1.2.2
cURL Information libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
libxml Version 2.7.6
libxml Version 2.6.26
FreeType Version 2.3.11
FreeType Version 2.2.1
iconv library version 2.12
iconv library version 2.5
libXML Version 2.7.6
libXML Version 2.6.26
MHASH API Version 20060101
MHASH API Version 20020524
Client API version 5.5.19
Client API version 5.0.77
MYSQL_LIBS -L/usr/lib -lmysqlclient
MYSQL_LIBS -L/usr/lib/mysql -lmysqlclient
Client API library version 5.5.19
Client API header version 5.5.19
Client API library version 5.0.77
Client API header version 5.0.77
OpenSSL Version OpenSSL 1.0.0-fips 29 Mar 2010
OpenSSL Version OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
PDO Driver for MySQL, client library version 5.5.19
PDO Driver for MySQL, client library version 5.0.77
libxml2 Version 2.7.6
libxml2 Version 2.6.26
libxslt Version 1.1.26
libxslt compiled against libxml Version 2.7.6
libxslt Version 1.1.17
libxslt compiled against libxml Version 2.6.26
libexslt Version 1.1.26
libexslt Version 1.1.17
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