Safari Installed Plug-Ins lists a Firefox plug-in.

I have seen many different threads related to the Coupon Printer plug-in, but I am not convinced it is actually their issue. I have three Mac at the house and all three have the coupon printer plug-in installed. On two, there are no issues. On the third, the application continues to prompt to install. After some troubleshooting, I have seen that the machine having a problem lists both the Firefox and Safari version of the plug-in in the list of installed Safari plug-ins while the two working do not. All have both in the /Library/Internet Plug-Ins/ directory, but the computer not working correctly is the only one that believes both are installed in Safari. Is there some way to exclude the Firefox plug-in from loading in Safari? Removing it does not resolve the issue, and given that the plug-in is installed in two working Mac, just not showing loaded in Safari, I don't believe this to be the correct resolution.

Which unfortunately doesn't at all answer the question. I'm trying to understand what circumstance would cause an identical configuration and install of Safari as well as another program (in this case an Internet Plug-In) would behave differently. I can't disable all plug-ins as then the one I want to run won't. I want to understand why it shows both a FF plug-in and a Safari plug-in on only one of the machines but not the other two Macs (one is a 10.5 PPC Macbook, the other a 10.6 Intel iMac) which are configured with the same pieces of software.
If this was a Windows machine, there would be a registry setting I could examine. If it were truly Linux, I could examine the RPM database. With a Mac, there's none of that directly exposed so I cannot even understand what I could check that would provide insight into the difference in behavior.

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Dear all,
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Hello Chris,
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On Thu 08/10/09 02:35 , ʇɐb ɹəuəllıʍ [email protected] sent:
Not quite sure what your question is - I simply don't understand it.
Shouldn't you rather install Adobe Reader to deal with PDF documents?
Please explain in more details if that doesn't answer your question.
>

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