OK I read through your info and verified the steps I had taken. I used all the same installation files you had listed (downloaded from the FTP site). The interesting this is that here in our company we all have the same OS (Win XP), ArcView version (9.2), and install files from the FTP site. This toolbar issue is only occurring on 1/3 computers. Works fine on the other two. I suspect something was just not installed right or cleaned up right after switching between the single use license and the concurrent use license.
Thanks for any additional insight.