Do I have a genuine rrrrootkit?

[Massimo]

Hello,

I did a full scan of my system with Avira virusscanner Free Version
and it found nothing.
Then a rootkit scan with Blacklight and it found nothing
After that a rootkit scan with Trend Micro's Rootkit Buster: it found
nothing.
Finally I did a rootkit scan with Avira's Anti Rootkit Tool and it
found this:

Results:
Hidden key :
HKEY_USERS\S-1-5-21-1614895754-796845957-682003330-1004\Software\Microsoft\Protected
Storage System
Provider\S-1-5-21-1614895754-796845957-682003330-1004\data
Hidden value :
HKEY_USERS\S-1-5-21-1614895754-796845957-682003330-1004\Software\Microsoft\Protected
Storage System Provider\S-1-5-21-1614895754-796845957-682003330-1004
-> migrate

Now I am not an expert and I am asking myself what to do with these
findings.
Do they point to a rootkit? And if so, what should be my next actions?

Thanks,

Massimo