After Upgrade, user need to login to update table?

Hi,.. its been long time after my question for upgrade multisite from 2.9 to 3.1.

And now we have to go to new stage for check blog themes. And i found not all blog have the option_name = current_theme (and 2 more related option) availabel in their wp_*_options.

But, when i tried to access one of the user where didnt have the options, everything looks okay -no error. And i tried to login to their dashboard, and still everything okay.

I remembered somewhere, or here or WordPress forum said about the upgrade process. The user need to login after upgrade, so the process will be completed for their specific table.

Maybe some one can point me or explain about this?