If you are using the trackpad on this laptop try using a USB mouse instead, and disabling the trackpad.
Many find that, when typing on the keyboard, a causal brush against the trackpad will do unusual things.
I have a new Aspire 5552-3691 running Windows 7. I'm not sure which combination of keys is causing this, but while I'm typing, the windows will miminize unexpectedly. Also, while typing, the cursor jumps backwards a few words or to some prior spot for no reason. These issues are annoying enough that I'm thinking of bringing the thing back if I can't get them fixed.
Has anyone else experienced these issues, or is there a setting I can simply change?