Comment 133 for bug 585940

Still 32bit.

There are two options:
 It should present 64bit as default, or show them side by side with a "Don't know which one to choose? Click here!", giving instructions to determine whether you're running 32bit or 64bit.

32bit is less secure, 32bit can't address as much RAM, and 64bit systems are beginning to outnumber 32bit if they have not overtaken them already.