On 8/12/2011 I upgraded to v 4.3.0. Since then I've experienced numerous BSODs.
I am running on Windows 7, SP1, 64bit. The machine is a Dell XPS 8300, on an i5-2400 with 8G RAM.
The problem may be related to the power state when the system goes to sleep; the bug check string = DRIVER_POWER_STATE_FAILURE.
I uninstalled RMP last night. It's too soon to determine if this makes the problem go away.
I cannot say for certain if the problem was caused by RMP but it did install a device driver, appliand.sys, and I believe there is another one (I don't know its name.), and badly behaving drivers can cause BSODs.
I can upload a miniDump if that will help determine if the driver is the problem.