6.1 how to add multiple images to a book page?

you may want to post in img package - the dev is veyr responsive and there are several folks over there who may know what the problem is...could be a lightbox issue, could be a cache issue (e.g. try manually emptying that cache and it will automatically regenerate thumbs, maybe that will fix it?)...

Ah i didn't know you wanted multiple profile images, this is a bit of a tricker beast, that, I have actually stayed away from. Drupal uses a separate primitive Picture system for profile associated images. By default a user is only able to have 1 user picture at a time. Perhaps there are modules or PHP codes to override this, I just haven't found them. What I think might work (for now), and as touched on below, is to have a User picture which can be adjusted from the user's Account and a user's Image Gallery: created by making a custom content type (called User Pictures or something like that) with attachments enabled plus the Content Profile Module to make this content type visible in the user's profile plus Image Package module which will display the user's images that were uploaded via attachments (and as an added bonus can be viewed via Lightbox, fancy). Content Profile shows a teaser in the user's profile so you can use Image Package's teaser threshold to say how many images will show on the profile page. And the nice thing about Content Profile is that it can be added to any content type so you can have any number of content types that the user can fill out and have show up on their profile page (see below for styling options). Downside is there would be no feature to allow a user to make an image uploaded via a content type their use picture, like how in facebook there is the option "Make Profile Picture." A minor in convenience for the user.

As far as advanced profile, it might be a while before that is up and running as it (as of D5) depends on Views, Panels, and optionally Bio or Nodeprofile to work. For the time being, you may have to add fields from the core profile section or you can use Content Profile(http://drupal.org/project/content_profile) plus CCK (http://drupal.org/project/cck) (not recommended yet since CCK is not officially released yet and is still buggy) to operate like Nodeprofile or Bio, but there is no Advanced profile like setup for D6 yet. But, either of these methods above, can be performed in association with a custom page layout to get an Advanced Profile like feel (or better). If you make a page-user.tpl.php file in your theme directory, you essentially override the page.tpl.php file for all user pages. How the page-user.tpl.php file is recognized: page(www.mysite.com/)-user(user/).tpl(template).php(php file extension). If you set up the page-user.tpl.php with unique div ids, div class, etc names you can style both your page.tpl.php and page-user.tpl.php or any others from a single style.css (the benefit of this is: more consolidated theming and less directories for the browser to search through, meaning faster loading time and simpler workflow!). For more info on this see: http://drupal.org/node/104316. Keep in mind that this would override a user's edit page as well. So you may need to make a page-user-edit.tpl.php (You can simply duplicate the page.tpl.php and rename it or make a custom one or even make a default edit page for all edit pages all together page-edit.tpl.php). Also, as far as I can tell URL Aliases and Pathauto are not used when Drupal calls the -.tpl.php files so the original name of the URL must be used in the file name.

Hope this answers some of your questions
-Nick