Thank marcos, that did the trick!
What i also noticed, is that since i've disabled that setting, i got a pop up telling me that the HL2.exe was edited and if i wanted to allow that,i think that is where the problem was, since my last HL2.exe update was about the same time i started having this problem.
Could it be that for some reason the update window of eset smart security wasn't popping up? it displays all the same symptons, when the popup is there i cant kill the task and the window of the process doesn't open up.
Either way, everything is working fine again and i can say that playing games with windows 7 64bit and smart security 7 does NOT eat up my performance, everything runs even smoother than before, hardware info:
amd 965BE @3.8 ghz / sapphire R7 260X / 4 gig ram @ 1333 mhz / caviar blue 320gb for windows, caviar blue 320gb for games and programs
Thanks for the support,
Now i remember why i chose ESET