Not to stir up the topic, but VA X inserts a space between /* when surrounding with * to comment. VA X removes the space when uncommenting, assuming you uncomment the entire selection you commented.
Pressing * when this line is selected:
int x = 0; /* someComment */
Yields this:
/*
int x = 0; / * someComment * /
*/
Pressing * again, ie when all three lines are selected, returns the code to its original state.
This said, we prefer commenting with /