I'd like to say one more time, for most cases, your galleries will be much easier to manage, if you enable per-page uploads. This is done by adding this command to config.php:
$UploadPrefixFmt = '/$Group/$Name';
You can read more about this script and download the latest version at Cookbook:ThumbList (I can no longer update the documentation at two different locations).
You can tell me what you think at this talk page.