Description of problem:
Users are not assigned to organizations and locations when 'All users' checkbox is checked, but the taxonomy edit page looks as if they were. When the 'All users' checkbox is checked, the items stay in their lists and do not move to the one on the right.

Steps to Reproduce:

Step 1: Create several users
Step 1: Administer -> Organizations
Step 2: Pick Organization to modify
Step 3: Users Tab
Step 4: check the 'All users' checkbox. Both 'All items' and 'Selected items' will get disabled, but items in the left list will stay there and will not be moved to the righ list (they will display correctly when the page is revisited after submission)
Step 5: Submit
Step 6: Administer -> Users -> click user name -> Organizations tab
Step 7: Note user does not have any organization
Step 8: Create a new user that should be automatically added to org, but that will not happen