Hi
now i m more clear .
i m an expert in patches and i can tell you for sure that there isnt any patch that put this group in the /etc/group .
i also install most of the hp software that exist and i search in our systems and didnt found and i cant remember of a hp software that is doing it .
so i thing that this is or a 3party software or some on did somthing it the past .
i would recomend to ask in your com. if someone know about this issue( probely you did it ) and then delete this entry from your system and see if something is worng .
i also check in our database about this issue and didnt found any info .
hope that you find the answer
love computers