Version 1.2a of Ultra Recall is available which will remove icons when they are unreferenced as described earlier in this thread (as well as several other bug fixes and enhancements).
You can download the latest version of Ultra Recall here:
http://www.kinook.com/UR/download.html
You can view the "How to Upgrade to a newer version of Ultra Recall?" FAQ entry here:
http://www.kinook.com/Forum/showthre...=&threadid=911
Note: Version 1.2a is a minor version update and is free to all licensed users of Ultra Recall.