Windows 7 laptop set to turn off screen after a few minutes of inactivity using Windows 7 power options. Sometimes the screen turns on/wakes up while in this state seemingly randomly for no reason.
It's running an Opera session, gadgets for weather, CPU monitor, and calendar. Sometimes runs other apps but that doesn't seem to affect this behavior at all.
No notifications pop up when this happens, no errors. No viruses, CPU usage is very low (single digits). No new applications installed, nothing really installed besides windows updates and Opera update (this didn't change anything). Nothing obvious changed since before this started happening besides these updates. No graphics driver updates. Windows 7 install is about 5 months old.