Thanks for reply, Mauricio. Finally tracked it down to a HP installed prog/add on called TrueSuite from AuthenTec. It should be kosha, and doesn't interfere with logons in other sites, but sure does with GZ.
May need to look further. Maybe I clicked an option that told it to wipe GZ off its list. Dunno, but stopping that service has made the annoying problem go away.
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