"Attention! Your computer performance may be at risk" (Winfix 10 Pro) Could be Annoying
"Attention! Your computer performance may be at risk" (Winfix 10 Pro) pop-up is such an unwanted ad-supported program that can penetrate systems via the distribution of a third party (maybe certain bundled program/shareware or superfluous toolbar/plug-in) and then wreck havoc with the invaded machines.
