For what it's worth...
I have been getting the same black screen and cursor that lhui describes on my Win 7 32bit PC ever since I upgraded to Avast 6 Internet Security some time ago. I have both a user account and admin account which are password protected. The black screen occurs after the login screen appears and I enter my password and then hit enter, it is as though something is interferring with the loading of the desktop. I have the boot time & PUP scan enabled.
If I wait approximately 20 seconds after the login screen appears until the hard disk activity starts decreasing, and then enter my password and hit enter, the system continues to load my desktop and all is well. With the boot time & PUP scan turned off, I don't need to wait until the hard disk activity decreases, I can just enter the password, hit enter and my desktop loads without a problem.
I am wondering if lhui has the boot time & PUP scan enabled and if maybe it is that that is causing the black screen and cursor, as in my case.
