On my machine (14GB or RAM) it uses a whopping 697,716K. What is worse, it take ages to run. I plug in my phone and Samsung Kies starts up... and then I wait. I can actually see it increasing in size in the Windows Task Manager (Processes, sorted by Memory). It loads at about 1MB per second, using only 13% of my CPU). You can do the math... it is agonizingly slow to load. What is the deal with this huge amount of memory. No other software comes even close regarding memory usage... it is stupid. I appears, when I compare mine to yours, that the more RAM you have on your PC, the more RAM KIES use. But have you also noticed that it is not only Kies that uses a lot of memory... it also makes use of DeviceDataServices.exe, using another 279,048K of RAM. The total on my system is almost 1GB of RAM for a single App.