Upgrading Drupal

After upgrading from the Core from 7.21 to 7.22, under Available Updates Drupal Core is reported as 7.21. Under Status Report the version is shown as 7.22.
After upgrading again to 7.23, the same results are obtained: Available Updates reports 7.21 as the current installed version.

Under Modules, 5 of the Core modules are listed as 7.21.

I am migrating my Drupal 6 site to Drupal 7. I have vocabulary/category links like this - http://www.megaleecher.net/category/12.
How do I replicate this on the fresh Drupal 7, I used the migrate module to get data and users from the old site.

Currently I have a site that is running Drupal 6.28 that I'm trying to upgrade to Drupal 7. After updating core and going through CCK Migrate > Migrate Data the module reports that everything converted properly. However when i look inside the database the new Drupal 7 equivalent field tables are blank. Anyone else having this problem or have any suggestions to fix this problem. I've been pondering the idea of using migrate module but it seems extremely confusing and complicated to me.

I am confused on how to update from drupal 7.22 to drupal 7.23. When I click the "update" tab I get this message
Updates of Drupal core are not supported at this time.

I am afraid of damaging my sites.

After Drupal Core update from 6.xx to 6.28 the links for a lot of the modules can't be clicked.

The modules are enabled, just for some reason they are greyed out. I don't have very many specifics as I am not a Drupal expert, yet, not to mention I have no idea where the issue is coming from.

For example if I go to create content then try to create a page. I can't click any of the following.

I'm a little confused. If I use an installation/distro of some sort when I start my Drupal site, how do I handle incremental upgrades? For instance, I am using Commerce Kickstart. There's an update to the views module. Do I wait for a new version of Commerce Kickstart and just update the entire installation? Or would I just add a new version of views to my sites/all/modules folder as I normally would?

Seems like overkill to keep updating a profile when I only need certain modules upgraded.