For some reason, ever since I installed System Menu 4.0 through Nintendo (On the day it came out, March 25th) if I keep clicking a channel and going back to the menu, then clicking it again, going back to menu, etc. I suddenly get a message that says the system files are corrupted. I just have to turn off the Wii then turn it back on and it'll work fine again, but it gets really annoying. Is anyone else having this problem, and is there a fix?