programs just don't load

so, i stopped everything from loading with msconfig, and it seems that Kasperski Internet Security 9 was creating the problem. I tried reinstalling kaspersky but the problem persists. I'm curious why everything works fine with kasperski running when windows is in "debugging mode".
what does this "debugging mode" do??? i need to figure this out because i'm fond of kaspersky and i don't want to buy now another anti-virus
so...the question of the day is: what does this "debugging mode" do?

basically debugging tools examine lines of code for breaks and or errors

computersplus said:

basically debugging tools examine lines of code for breaks and or errors

yes, that's true. I am referring though to the "debugging mode" option that the F8 menu comes with, when booting windows. I really am tired of searching the internet for an explanation because after a lot of searching i just can't find what i need! I don't want to learn to do debugging now, i would just want to know what exactly is being disabled when windows is in "debugging mode". some info would be appreciated, thanks!