ACLoginWidget that automatically makes a login form for your ActiveCollab installation in your WordPress Site, with options.
Make sure the widget is set to the full AC installation, WITH a trailing slash
Make sure in ActiveCollab, you have the Public Submit module installed and configured.
That's just the nature of the widget, unless it can actually tie into AC, it can't know if you are already logged in. We hope to add some of this functionality in future version.