Adobe Reader... + Memories of Ashton Tate
How many here have inadvertently downloaded McAfee when all they want is Adobe Reader? I'm sure the tick box (pre-populated with a tick) for this optional extra is designed to lag being rendered just far enough behind the main "install" button just long enough for that to be clicked on, tricking you into accepting the McAfee option as well.
Ashton Tate: I remember trying to install Dbase IV from floppy disk. I forget how many floppies there were, but it took ages to plug them in, one by one. I swear that the first disk contained nothing but an animation of the Ashton Tate logo which appeared to shrink from screen size down to visible proportion, not impressed with that introduction to the software, and it went downhill from there.