I think it only happens when the folder I'm opening has a restricted access..if you're using 64 bit OS, try entering 'Perflogs' folder in C(if you have..)..when I enter it the focus rectangle doesn't move(I've found a solution but requires more key presses)..using WE you can enter after confirming that you want to enter by clicking the 'continue' button in the dialog..btw, it seems that it only happens when I'm using 'right arrow' key and not the 'enter' key..there's no use entering these folders but the problem is when i accidentally open them..the focus rectangle gets stucked..well, this is a minor problem and I've found a solution so there's no need to waste time on this...