the release version (even numbers) are usually old as they're released once a year.
latest development version (odd numbers.. .3) is up-to-date
use the 64bit versions at your own risk, there's a reason we don't provide 64bit binaries - they're buggy...
Maybe some day I'll upgrade my dev tools and try to fix that, but its not something I look forward to doing..
best regards,
- dink