Comment 4 for bug 783733

I have this bug on my desktop and my friend has it on his laptop.
Both computers have Intel integrated graphics and Linux Mint 11 installed.
When computer freezes I'm able to switch to console with Ctrl+Alt+F1, but killing screensaver process does not help.
If I restart xserver with Ctrl+Alt+Backspace and then login everything works.

The bug is quite random but occurs mainly when sleep time is about 30 minutes or more.

Ubuntu has similar problem:
https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/762918