I have rebooted and it still does this:
If I have the browser open to at least one window, but it is not active--the device is on the desktop--and I lock the screen...when I unlock the screen via the lever (next to the headphone jack) the device opens to the desktop...but if I unlock with power button and swipe (without a lock code) then the device opens to the last browser window you were on. Even though you were not viewing it when you locked the device.
It's pretty harmless mostly, but I can imagine a situation where you might not be expecting this...
Anyone else, or just me?