Not even a mouse

Time for a little pre-Christmas competition, suggested by Bruce Parker at IRIS Legal Solutions.
“I would like to volunteer verses based on Twas the night before Christmas,” he says. Here’s Bruce’s attempt, and if you fancy a crack at it, let us know. We’ll publish the best entries, and there may be a Christmas prize if you’re good.
Twas the night before launch of a new Vista pack
When all who weren’t barred were drunk in The Stack
The landlord was happy, his tills rang with cheer
The punters were happy, there was still lots of beer
The CDs were nestled all snug in the shop
While visions of progress would come to a stop
The punters installed it (though most were still smashed)
A message disappeared, and the system had crashed.