It was wrong of the OP to do what he did but I find some peoples responses rather funny.
At the end of the day most people don't like work, if you do then well done, you have either been very lucky and got one of the few fun jobs or your personal life sucks so badly that work is somehow better.
I am not some workshy oaf and do enjoy work occasionaly but most of time i would rater not go.
I don't pull sickies simply because I can't lie well
and it is my career. if I didnt care about the job I wouldn't feel guilty, if they give you a crap job, give them a crap emplyee.
I would say a warning is a fair outcome.
I recently got a warning for getting a laptop delivered and turning it on, regardless of the fact people get stuff sent here all the time, we have had problems with people just going over the top and leeching like crazy and doing no work, even playing games.
so because i had the lappy on the desk and someone mentioned it to a manager, it turned into "playing on laptop instead of working"
still disputing it however. wish me luck.