Fatal error: Allowed memory size of 67108864 bytes exhausted

hostgator isn’t limiting the php memory last I installed there

try adding this line to your wp-config.php and see what happens
define('WP_MEMORY_LIMIT', '96M');

Are you using pretty permalinks? If so, what custom structure are you using?

Samboll: Hostgator support says they limit memory to 64M and I would have to switch to VPS to get more

esmi: If pretty permalinks is a plugin, no. I’m just using custom structure /%postname%

Pretty permalinks = custom permalink structure. Try resetting your custom permalinks back to the default setting. If that works, then try reading Using_Permalinks before setting a custom permalink structure back up again.

If I reset the permalinks, will that mess with my incoming links?

Unfortunately, yes.

I fixed this issue by adding the code:
$wpdb->flush();

As a hashmap is being built it is somewhat redundant to have the query results cached as well. A limit to the number of lines called might be handy in some cases.

in meta.php function update_meta_cache() as follows:

// Get meta info
	$id_list = join(',', $ids);
	$cache = array();
	$meta_list = $wpdb->get_results( $wpdb->prepare("SELECT $column, meta_key, meta_value FROM $table WHERE $column IN ($id_list)",
		$meta_type), ARRAY_A );
        $wpdb->flush();
	if ( !empty($meta_list) ) {

Hi,

Check with these options:

1) Either rename/remove Plugins folder via FTP or disables all the Plugins from database.

2. If you have an access of PHP.ini file of the account/server then change the line in PHP.ini where line shows 32M to 128M:
memory_limit = 128M; Maximum amount of memory a script may consume (64MB)

3. If you do not have access of PHP.ini file then add this to an .htaccess file of your domain:
php_value memory_limit 128M

Thanks,

Shane G.