This is strange, and I can't reproduce it reliably, but...

Occasionally when I am typing javadoc comments in the editor, hitting ENTER at the end of one line will add an empty line below starting with "* " as expected, but the asterisk will be one column to the right of the asterisk on the previous line.  In other words, suppose I have finished the first line below and hit ENTER; the result will look like this:
  /**
   *  First line of Javadoc
    * 

This doesn't happen reliably, but it appears that once it starts happening in a given file, it happens anywhere in the file (not just at the initial location) and it continues to happen even if you close and reopen the file, or even close and restart the IDE.

When this starts happening in one file it does *not* happen in other open files.  Moreover, prior to the first time this happens in a module, alignment is fine.  Then, out of the blue, you hit ENTER and the erroneous behavior starts.

This was absolutely not happening with 6.9.1.

I've searched through .netbeans/7.0 for files containing a filename for which it happens, but none of the hits seems to have anything to do with editor preferences specifically for that file.