NumannH of Sophos reported that he came across a fake spyware/malware cleaner. Two screen shots were included in the blog entry of what the program looks like.

Here are some of the things that happened to his computer:
1. His desktop wallpaper was changed. It changed to a message which read: “WARNING! YOUR PC IS INFECTED!
2. It prevented him to start any new programs.
3. His PC will not let him run command line tools.

The software basically forced him to purchase the full version of the software in a secure webpage.

Source: Sophos