terminal hour glass failure

This is when a pc or a laptop decides to hang at the most critical e-mail/operation that you have ever done in your entire life.
It is also when IT comes along and states the bloody obvious that you pc/laptop has just hung and needs to quit .It also results in the loss of the data that you were either doing or sending resulting in a huge amount of tourettes from yourself and 4 weeks work down the pan

your pc/laptop has suffered terminal hour glass failure,or has just hung