Can Install, But Doesn't Do Anything
I've installed and uninstalled both Zotero and Firefox 2 a few times today and am having the same problem: Zotero installs, adds its stuff to the "Tools" menu (and to the right-click menu), and I can get to the Zotero window, but that is it. No Zotero logo in my status bar, no icons in the location bar if I do searches (I tried JSTOR and Google Scholar), none of the buttons in the Zotero window do anything. My OS is Windows XP.
This is an old discussion that has not been active in a long time. Instead of commenting here, you should start a new discussion. If you think the content of this discussion is still relevant, you can link to it from your new discussion.
Edit: Never mind, somebody who knows what they're talking about beat me to the punch...