Comment 4 for bug 518067

01:00.0 VGA compatible controller: nVidia Corporation G73 [GeForce Go 7600] (rev a1)

found a workaround
if you open appeareance config, and choose to activate 3d effects it will search drivers again, strangly it does find them now.
I've aborted the install and now jockey knows my drivers too.

Could you test this on your machines too - guess the first attempt of jockey doesn't know where to search or where to get the hardware info.