How to detect Alexa toolbar on FF4 ?

[mamylo]

Hi
I want to detect my users who are using Alexa toolbar.
In FF3, it was easy. The user agent showed AlexaToolbar
But in Firefox 4, the toolbar doesn't change the user agent.
I searched the internet and found nothing (I think it's because FF4 is newly published)
What can I do?

BTW, sorry for my bad English

[bicycling]

Hi i was also looking for the same thing, to know visitors with the Alexa toolbar installed, all i have to do is look at the User Agent in the apache log?