Hi. Need help deciding. I've got a new system running 64-bit Windows 7 Ultimate on an SSD. I'm testing some optimizations right now and came across this registry tweak on the internet. I tried playing the Battlefield 3 singleplayer campaign with paging executive disabled and gameplay was smoother, faster. Frame transitions seemed less obvious. Also, other applications seemed to load and respond much quicker. But I cannot discount placebo without further testing and actual measurements with Fraps, I guess. I'm worried, however, about the possible ill effects. Apart from games, I will only be using this PC for internet browsing and work-related stuff (mostly MS Word, MS Excel, Powerpoint). I have 8gb of RAM on my machine. Does anyone out there have any experience using this registry tweak? What is the very worst thing that can happen if I go on testing my machine with paging executive disabled? If I do decide to test further, I can always re-enable paging executive again by restoring the original "0" value in the registry? Thank you in advance for your time and effort.