Hi,
in standard-based themes, the ajax icon is showed properly above (not over) the rating menĂº. That's because the ".forumpost .ratings" selector has one 1em top padding.
But the moodle2 theme has only 0.3em defined + float right, hence the awful effect.
So I'm going to edit moodle2 theme (directly in moodle.org is the way, I guess), to define that selector as:
.forumpost .ratings {
/background-color: #FAFAFA;/
float: right;
padding: 0.5em 1.5em 0.5em;
}
That way, the ajax icon will be showed at the right of the menu (increased padding right to 1.5em), plus add some more padding top, to align ratings better with commands.
Ciao 
Netscape?! Do you mean Firefox?