I just found these on a web site called alphadictionary.com. They don't really fit the complete definition of haiku but they aren't bad. I really like the second one.

Haiku Windows Alerts

A file that big?
It might be very useful.
But now it is gone.

Windows has crashed.
I am the Blue Screen of Death.
No one hears your screams.

Login incorrect.
Only perfect spellers may
enter this system.

This site has moved.
We'd tell you where, but then we'd
have to delete you.

This crash reduces
your expensive computer
to a perfect boat anchor.

There is a chasm
of carbon and silicon
the software cannot bridge.

Yesterday it worked.
Today, it is not working.
Windows is like that.

Author: Randy?
Contributor: Wendy Middleton