I'm using Returnil Personal v.18.104.22.16802 on Vista Home Basic SP2 x86 on a Dell Latitude laptop. When I leave my computer to idle for longer than approximately 30 minutes, my computer freezes and I'm forced to do a hard shut down. However, when I hold down the power button or turn off the power strip to power my laptop down, I run the risk of corrupting my files, which has happened 5 times within the last 2 to 3 months. I've let my laptop idle with Returnil off and when I returned, it ran fine. The programs I usually leave running are AIM and a webpage or two on Chromium. I've also had my computer lock up at the Vista sign-in screen (ex. I turn on my laptop and get called away and upon returning it's frozen at the user select screen). It's become irritating to see my windows files go corrupt and be forced to reinstall Vista, along with all of my drivers, updates, and regular programs. How could I fix this problem? Would increasing cache size help at all? If so, what size should it be, its currently set at default, 5120MB.