I was trying some older versions but version numbers and release versions are not clear to me.
For instance how can I know what is the most stable release of a given version, say 2.49:
The folder listing looks like this:
... Blender2.49/ 2009-Jun-04 09:24:18 - Directory Blender2.49a/ 2011-Jul-11 16:08:09 - Directory Blender2.49b/ 2009-Sep-16 09:53:26 - Directory ...
So, which one is the stable release, is it the "newest one"?, so what does the letter a stand for, is it alpha?
How is it related with the software release life cycle common acceptance?