Why Comment not dissapear

I try to build views, and it shows user..
i use imagefield to show the picture, and it links the node to content/[username]

First Question is, how can i change the content/[username] to users/[username]
i've already try used path auto and change the Pattern for all Usernode paths: users/[author-name-raw]

Second, if so displayed in content/[username]
how can i disabled the comment for that content?
I've already disabled comment at content types - usernode,
but it's still in there when i view someone profile at content/[username]

thanx, i appreciate if someone can help me..