I've been getting a similar issue to dadge, when I tab out of LFS or close it sometimes (usually when uptime is over an hour or three) it takes windows out; all I've really found out so far is a potentially irrelevant event viewer entry: "Application popup: dwm.exe - Application Error : The instruction at 0xf7444e02 referenced memory at 0xffffffff. The memory could not be read." just before I hafta punch the reset button.
Windows 7 x86_64 Ultimate, i7, some other stuff, will drop spec at the bottom of the post. When I launch LFS aero glass reverts to the blue spec stuff, and half of the time when I quit the taskbar disappears, applications hang, I can ctrl+alt+delete one time and hit shutdown to attempt to close a few apps, but after that it hangs. I get mouse movement and numlock, no other response. I'm running a fresh install of LFS, occasionally use revbouncer and so on for fun but they're not causing the issue; it persists without them. I'm at a loss, tempted to run an XP VM and play in that, but it's hardly a solution.
I ran the graphics card and ssd on my previous mobo/cpu/ram fine, running the same OS. Previous cpu was a wolfdale e8400, 780i reference mobo, some ddr2. This is a bit of a reach, but I've got no idea what's going on. No other app causes this kind of issue.
spec;
Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1
Intel(R) Core(TM) i7-3770K CPU
8GB DDR3 stuff, gay red heatsinks on it.
GA-Z77X-D3H motherboard
MSI Radeon 6950 Frozr 3 GPU
Radeon HD 3400 for third monitor
M-Audio 2496 card in there for fun
Crucial M4 128GB latest firmware