When start my computer S&D emit an announcement:
Registry change denined
Identified as: User blacklist
Resident denied the change of RealUpgrade ( category System Startup user entry ) based on your black list
and open a blank Internet Explorer window ( my default browser is FF )
I open S&D and at System Startup appear 2 lines:
Located: HK_CU:RunOnce, RealUpgrade
command: C:\Program Files\Internet Explorer\iexplore.exe
file: C:\Program Files\Internet Explorer\iexplore.exe
size: 93184

Located: HK_CU:RunOnce, RealUpgrade (DISABLED)
command: C:\Program Files\Internet Explorer\iexplore.exe
file: C:\Program Files\Internet Explorer\iexplore.exe
size: 93184
If a try to erase these entry from registry ( use regedit ) appear again first S&D announcement and keys ereased reappear.
Please answer: what is RealUpgrade and how drop this problem ?