[CentOS] Is ext4 safe for a production server?

>> and less support for 32-bit platforms in general.
>
> Unless you're talking about desktop systems and things like flash...

(OT) The beta Flash plugin for 64 bits works really well, I use it for
months on Fedora and CentOS:
http://labs.adobe.com/downloads/flashplayer10_64bit.html
cd /usr/lib64/mozilla/plugins
sudo tar -xzf ~/Downloads/libflashplayer-10.0.32.18.linux-x86_64.so.tar.gz