User session timeout

[fakeDecoy]

Also, I ran admin/server_info.php, and the session settings it's showing there are different than the output from a script running phpinfo() in my zencart catalog (running PHP via an ezpage hack). In the admin, my sessions last indefinitely, as long as my browser session. That's how I want it to work. So I just need to make the rest of zc like the admin.
Is there any particular setting that stands out? The local values of session.gc_maxlifetime is already acceptably high for both.



Here they are, both PHP 5.3, domain name redacted:

from zc admin:

Directive	Local Value	Master Value
session.auto_start	Off	Off
session.bug_compat_42	On	On
session.bug_compat_warn	On	On
session.cache_expire	180	180
session.cache_limiter	nocache	nocache
session.cookie_domain	.www.mydomain.com	no value
session.cookie_httponly	On	Off
session.cookie_lifetime	0	0
session.cookie_path	/sysop	/
session.cookie_secure	Off	Off
session.entropy_file	no value	no value
session.entropy_length	0	0
session.gc_divisor	2	100
session.gc_maxlifetime	99999	1440
session.gc_probability	1	1
session.hash_bits_per_character	4	4
session.hash_function	0	0
session.name	zenAdminID	PHPSESSID
session.referer_check	no value	no value
session.save_handler	user	files
session.save_path	/home/mystore/public_html/cache	/tmp
session.serialize_handler	php	php
session.use_cookies	On	On
session.use_only_cookies	On	On
session.use_trans_sid	0	0

and from zc catalog:

Directive	Local Value	Master Value
session.auto_start	Off	Off
session.bug_compat_42	On	On
session.bug_compat_warn	On	On
session.cache_expire	180	180
session.cache_limiter	nocache	nocache
session.cookie_domain	.www.mydomain.com	no value
session.cookie_httponly	On	Off
session.cookie_lifetime	0	0
session.cookie_path	/	/
session.cookie_secure	Off	Off
session.entropy_file	no value	no value
session.entropy_length	0	0
session.gc_divisor	2	100
session.gc_maxlifetime	172300	1440
session.gc_probability	1	1
session.hash_bits_per_character	4	4
session.hash_function	0	0
session.name	zenid	PHPSESSID
session.referer_check	no value	no value
session.save_handler	user	files
session.save_path	/home/mystore/public_html/cache	/tmp
session.serialize_handler	php	php
session.use_cookies	On	On
session.use_only_cookies	On	On
session.use_trans_sid	0	0