Post installation

I am having problems when I will go attach some file using the upload module. The problem is that when I click on submit and the process parently is used but the file not is attached. I saw some report about this problem but don´t have solution about this problem, I need a fix or special configuration.
The version of the drupal that I am using is 4.7.2

excuse me my bad English

I have been working with 4.6 before, but now in 4.7 I see that the super user cannot set a user to authenticated any more. Then I also wonder how a user can become authenticated? I have a test site up on a local linux box and i had a peek in the users_roles table and there is no user that has the authenticated role. I also wonder why none has the anonymous role there. Shouldn't at least user id zero be anonymous? Is there a documentation or discussion related to this change?

I'm getting the following errors whenever I try to do a string search for locale strings:

warning: mysql_real_escape_string() expects parameter 1 to be string, array given in /usr/www/users/njehlen/enoughfearlive/includes/database.mysql.inc on line 349.
warning: mysql_real_escape_string() expects parameter 1 to be string, array given in /usr/www/users/njehlen/enoughfearlive/includes/database.mysql.inc on line 349.

Hello,

Could someone explain how the code for generating
the social bookmarking buttons for Technorati, delicious Digg etc
like this blog

Getting seriously confused about what the difference between a primary link, a secondary link, a menu, a menu item, a navigation is etc...I've looked at the documenation but it seriously sucks. Also confused about the difference between what e.g. an administrator sees, and an 'anonymous' person. Where is this all controlled? What does 'restrict parent items to' mean? I have two primary links, clicking on one brings up "list" and "add vocabulary" tabs, but clicking on the other brings up "list" (list what?), "add menu" and "add menu item" tabs - why are these two primary links different?

Can they? I think not, but I just want to be certain. I've taken this new poll version http://drupal.org/node/51561 for a drive and the delete function is not there. Can anyone confirm my being right or wrong on this?

cheers,

larry