About an hour ago I was working upstairs as usual when all of a sudden I heard a loud bang downstairs, almost like someone had thrown something against a wall. As I was alone I thought maybe the cat had knocked something over, so I go down, the cat is outside (no catflap so I have to let her in via the door or window, so it wasnt her). I can't spot anything so go back to work. Anyways I decided to put some lunch on and open up the cuboard with the baking trays in, and low and behold in a glass bowl there is just a huge heap of shattered glass. Having a bit of a stir around it turns out this is, or was a pyrex measuring jug. So, for no apparent reason this jug just decided to explode! The glass was all over the bottom shelf and in containers and other jugs. How bizare! My first thoughts must have been on the top shelf and fallen down, well, theres no room on the top shelf where it could have fallen from. I also keep all my jugs on the bottom shelf so wouldn't of put it there, and also there is 0 damage to the bowl which contained all the glass shards. Add in, the glass had literally gotten everywhere in the bottom shelf, if it had just fallen in I wouldnt of expected such a huge ammount of "spash". How about it being hot and then quickly cooled down? The jug hasn't been exposed to any sudden temperature changes recently. The last it was used was 2 nights ago to mix up some gravy, it was then washed, dried and put away realtively cool. The glass shards were not there yesterday! Creepy eh?