Well, I really don't know what happened, but I'm using Smart Security v4.0.437.0 and its real-time protection is making several of my applications stall, which ultimately makes my entire Windows stall in a short time after. As some background info, I recently reinstalled Windows XP Pro x86 and upgraded from a previous version of v4 Smart Security (most likely '314' or something, can't remember) to the '437' version. Now, whenever I run JV16 PowerTools or ImgBurn, my computer freezes. If I disable real-time protection, both programs open normally. If I add them to the 'Exclusions' list, they open normally, as well. But, I have a strong feeling that there will be several others that Smart Security will also conflict with. Moreover, disabling 'Advanced Heuristics' everywhere listed in the settings for the real-time protection prevents the stall and reduces the lag, but there is still a noticeable wait time before the programs open. The only option that completely stops the lag, besides disabling real-time protection or adding the .exe's as exclusions, is unticking the 'File' option under the 'Setup' for real-time protection. None of this ever happened with the previous version I used. Any suggestions or something I did wrong before I downgrade?