If cron runs while a form with an imagefield is open, error: "... This form was missing from the server cache..." on img upload

I was tlaking with carlos8f on IRC about this and he believes that the issue has to do with me putting everything in one 'default' bin. However, I thought that this was the whole purpose of getting wildcards to work with memcache ... so you dont need many bins.

Anyway, in case this helps:

I have performed two different experimentsto see if I could get rid of this error... both failed:

EXPERIMENT I
- Removed extra memcache server from my settings.php ... with this setup there was one and only one memcache server:

/**
 * Memcache variables:
 */
$lgs_memcache_path        = './sites/all/modules/contrib/memcache/memcache.inc';
$lgs_memcache_servers     = array(
  'memcache1.colo.astrology.com:21219' => 'default',
  //'memcache2.colo.astrology.com:21219' => 'default',
  //'memcache3.colo.astrology.com:21219' => 'default',
);

$conf['cache_inc']                            = $lgs_memcache_path;
$conf['memcache_key_prefix']      = 'lgs_';
$conf['memcache_servers']            = $lgs_memcache_servers;

EXPERIMENT II
- For this I added back a separate bin for forms even though I am using a version of DEV that supports wildcards:

/**
 * Memcache variables:
 */
$lgs_memcache_path        = './sites/all/modules/contrib/memcache/memcache.inc';
$lgs_memcache_bins        = array(
  'cache'       => 'default', 
  'cache_form'   => 'form'
);
$lgs_memcache_servers     = array(
  'memcache1.colo.astrology.com:21219' => 'default',
  'memcache2.colo.astrology.com:21219' => 'default',
  'memcache3.colo.astrology.com:21219' => 'default',

  'memcache1.colo.astrology.com:21218' => 'form',
  'memcache2.colo.astrology.com:21218' => 'form',
  'memcache3.colo.astrology.com:21218' => 'form',
);

$conf['cache_inc']                            = $lgs_memcache_path;
$conf['memcache_key_prefix']      = 'lgs_';
$conf['memcache_servers']            = $lgs_memcache_servers;
$conf['memcache_bins']                 = $lgs_memcache_bins;

Still no solutions though ... any advise/help/thoughts/jokes/Jack Daniels would be welcome...

I have confirmed that this problems is reproducible if you open a form with a imagefield in it, and run cron.php while the form is open. Then try to upload the image.

so far #959200: Add ability to exclude bins (tables) from memcache is solving my issue ... leads me to believe that #966114: cache_clear_all ignores cache "expire" attribute is exactly correct

I'm closing this (as duplicate) in favor of #966114: cache_clear_all ignores cache "expire" attribute

fixing title for searching purposes...