very weird screen after installing software

I was installing some software today called PicLens which let's you scroll images in 3D.

They have an option online where you can have images on your website converted to this 3D viewing format. While doing this my screen suddenly turned into this weird all pixeled mode (like when my Atari casettes would get stuck, or my 1983 Nintendo). Scared the heck out of me, cause whatever I did (esc, force quit etc) it stayed that way. Finally I had to reboot to get my MBP in it's normal state.

Can anybody tell me if this might have to do with what I was doing online or is this something that sometimes happens to MBP's? (which I find hard to believe)

HELP, I thought I was going to die of an heartattack, my MBP is only 2 months old!!