Version-specific issues for Mathematica 9 (other than bugs).
Mathematica 9 is the ninth version of Wolfram Mathematica, released on 2012-11-28.
This tag is only for version-specific issues that depend on version 9 specifically, such as installation. If your question is about a feature that was introduced in version 9, tag it with that feature instead, not this tag.
For bugs, the tag should be bugs when community consensus is reached and a notice conforming to the guidelines in Standard header for bugs-tagged posts, for easy searching should be placed in the first line of the post.