Two words that really piss me off! 
There's not a day goes by that my loony laptop doesn't give me that excuse. Roughly translated it means it can't be arsed to do what I've told it to do and I have to sit and wait until it feels like doing it.
If computers are SO smart, then why ffs can't they speak English "Sorry I can't do this at the moment because....." or something like.
To make matters worse, when you try to stop the program running, it rubs it in even more.
Press Ctrl, Alt and Del to get the task manager up and it shows you that the program is "not responding"
I know, that's why I want to stop it running
So I highlight the program and click End Task, then you get a grey box appear saying "This program is not responding"
I KNOW!!!!!!!!! 
So then you click End on that box, the box disappears and the computer just sits there. Ok what's it doing now???
Suddenly (after what seems like hours) the program stops running, then you get a box saying something like "You chose to end an unresponsive program"
NO SHIT SHERLOCK!!!!!!
At the bottom of that box you get an option to report the error, claiming that a report goes to Microsoft about what happened and they'll try to find a solution
DON'T BOTHER!!!!!!
I've sent countless error reports and absolutely sod all has been done I think it goes through all of this just to humour the user.
Please if anyone from Microsoft uses Blog (which I doubt but it's worth a try) FFS DO SOMETHING ABOUT THE REPORTS I (supposedly) KEEP SENDING YOU AS I AM GETTING VERY PISSED OFF WITH THIS!!!!!
Ok rant over *breathes deeply and counts to 1000000*
Ahem....sorry
See ya!!! 
