Your Unfriendly Neighbourhood Gremlin

I'm beginning to suspect that we've got an evil creature lurking in the dark corners of the house and coming out at night to sabotage various items around the household. Since the start of the year we've had:

• A hard drive failure on the main PC - had to buy a new disc.
• A RAID controller failure on our NAS - had to buy two new NASes*. Fortunately I did manage to get our data off it.
  
• A leaking roof.
• A CPU or motherboard failure on the main PC - had to buy a new PC (more on that later.)

It's starting to become the most expensive pet we've ever had!

*Two because I realised that even though the NAS runs a RAID array, and thus we are protected against disc failure, we're still not protected against NAS failure, so I have to backup the NAS as well. Obviously the best way to back up a NAS is to use another one.