Trouble with link categories and tags naming

[oyvindmal]

If I make a link category called e.g "Football" and then later on tag a post with the tag Football. Then later on if I decide to change the name of the link category the name of the tag is also changed.

I think this has a really simple explaination. The query which changes the name only ueses where name=$category_name (not sure about the field names and variablenames) and therefore will change all occurances of $category_name. Instead it would be better to use $category_id at that should be an unique identifyer for the category/tag.

See #6211. Canonical names across all taxonomies is by design, at least for now.