Wierd stuff happening starting with Screen saver

For some reason, when my system gets into screen saver mode, when I wake it up the screen is black. No icons, no desktop, nothing. The only thing to do is reboot. Secondly, when I download anything, my browser locks up. Firefox as well as IE8. Now it frees up in about 20 seconds or so, but the browser won’t respond to mouse clicks.

I’m running the 64 bit version of Win 7 as well as the 64bit version of CIS. I’m wondering if this release isn’t still beta. It’s behaving very strangely and I may end up removing it. It’s too noticeable and obstructive when I’m trying to use my computer. Something previous versions on Vista and XP never was.