Even worse here - we cant change the screensaver or screen lockout timeout settings!
I have a workaround by running a little looping script that keep the screen active. Its not that I particularly object to the screensaver, but once it activates I have to Ctrl Alt Delete 3-4 times and enter my password to get my desktop open again. Also it is an active screensaver that sometimes mucks up my desktop layout (I have a multiple monitor setup)