Why are PPA's set to only retain the latest version of the software? I ask because I just installed Blender 2.69 and it constantly crashes on me; I then decided to just install 2.68a but found that it is IMPOSSIBLE to install an older version of software using the Ubuntu software center. I turned to possibly seeing if the PPA retained an older version but have found most PPA's remove older versions as they are designed to only offer the latest. How does this sound like a good idea? What if, for example, someone releases a version of their software that constantly crashes and the user wishes to get an older version but because the way PPA's are designed they cannot. Sounds familiar... To add insult to injury, I was easily able to role back Internet Explorer to version 9 on a machine at work today; that is just sad.