For some reason the webrep icon is no longer present in firefox 3.6.15 on my XP Pro SP3 system.
This as far as I can recall happened today/yesterday as it appeared to be working fine recently.
I haven’t had any recent firefox or pre-release 6.0.1027 updates recently, the icon just went AWOL. It is shown as installed in the avastUI WebRep section and in the firefox add-ons.
This has also happened on my win7 netbook with 6.0.1027 and firefox 3.6.1027.