I've recently installed Sandboxie on my new machine running Windows 8 (64bit). On his website Tzuk stated that at the moment Sandboxie will protect Windows 8 (64bit) but it will somewhat be weaker than for example on Vista and Windows 7' 64bit versions. He talks about "limited protection" and no "Experimental Protection feature". How limited is "limited"? On the other hand there was no notification of incompatibility from Windows 8 on my machine.