[Gllug] Unasked for plugin "installed"

[M.Blackmore]

On my wifes computer just a few minutes ago a link brought up an 
unexpected window saying a plugin "content adviser" summat or other had 
been installed into Mozilla 1.6...

?Que?!!

Was this malware? I had a look through the various mozilla folders for 
plugins and couldnt' find anything remotely like this. Or would that 
have been a smokescreen?

Suse 9.0, online updated ironically only an hour or so before.

Should I wipe the disk and reinstall? Panic panic panic
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