Windows 7 Issues with Java 6 Update 22 Causing Office 2007 Authentication Problems on Windows 7

I am experiencing a problem running Java 6 Update 22 on my 7 32-bit machine. Since I installed it a week ago, many times when I open an Office 2007 app (mainly Outlook) I get a message telling my version isn't authentic. After I download the OGAplugin and click refresh and then the next tab to continue the re-authentification, nothing happens. In the lowere left-hand corner of the screen it says something like Java:0(void). What does this mean? Are there certain versions of Java that don not work w/7? If it helps to know, I am using Firefox as my browser. Thank you for any help.