Description:
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session_start() is sending the session cookie at every request, and Internet Explorer 6 hangs indefinitely the third time that happens.  This is with PHP 4.3.4 (module) / Red Hat Linux 7.3 2.96-113 (kernel 2.4.20-20.7) / Apache 1.3.29. 

This problem seems to bear some relation to the problem reported in bug #22771, though I am NOT using session_id(), as described in that report.  Also similar is #25894, but that was marked as bogus.

The code fragment exhibits the problem on my system, described above.  The same code on PHP 4.3.0 (module) / Slackware Linux (kernel 2.4.12) / Apache 1.3.26 works fine -- the session cookie is only sent on the first request.

Reproduce code:
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ini_set( 'session.name', 'MyCookieName' );
ini_set( 'session.save_handler', 'files' );
ini_set( 'session.auto_start', '0' );
ini_set( 'session.gc_maxlifetime', '3600' );
ini_set( 'session.gc_probability', '5' );
ini_set( 'session.serialize_handler', 'php' );
ini_set( 'session.cookie_lifetime', '0' );
ini_set( 'session.cookie_path', '/' );
ini_set( 'session.cookie_domain', '.YOURDOMAIN.com' );
ini_set( 'session.use_cookies', '1' );
ini_set( 'session.use_only_cookies', '1' );
ini_set( 'session.cache_limiter', 'nocache' );
ini_set( 'session.cache_expire', '60' );
ini_set( 'session.use_trans_sid', '0' );

session_start();

Expected result:
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I expect the session cookie 'MyCookieName' to be set on the first request, only.

Actual result:
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'MyCookieName' is set with each request.  Internet Explorer 6 / Win chokes the third consecutive time this happens.