the strangest thing to happen to my macbook to me just occured, first i plugged in my windows based external HDD, and tried to delete some files.(ok should have read apple faq first) but with that aside, after i plugged out, i contniue to surf the web till i tried to launch my itunes. it couldnt launch !, its like fixed there, i enabled the animation which usually have the bouncing effect when the icon is clicked. i tried clicking at from Finder there, but to no avil. lastly thought restart comp, but cannot restart, just tiao down there. so quickly go online find for reason, freak, now safari programme not working.
lastly i manually restart my laptop by pressing the on/off button for bout 10 sec, everything is back to normal.
my question is that is this normal ? or is there something that i did wrong.