CentOS - Dec 2011 - Network Situation

In my personal environment, I've got 7 machines running, with 4 of those 
machines running various flavors of Linux (CentOS 5 x86_64; Fedora 15 
x86_64; Fedora 14 i686).  Based upon some issues with the Fedora 15 x86_64 
machine I'm considering dropping Fedora 15 in favor of CentOS 6.1.  My 
questions are:
On the networking side, has a there been a move to change the ethernet 
names from eth0 to em1?
After install, can I change from NetworkManager to plain network?
On my CentOS 5 machine I'm running VMware Server 2 and would like to move 
to KVM virtualization on the Fedora 15/CentOS 6.1 box.  Is the level of 
KVM comparable between Fedora 15 and CentOS 6?
If I install CentOS 6.0 and sometime later upgrade to CentOS 6.2, will the 
fact that I'm running software raid-1 on the /boot partition cause me 
grief?
Will the fact that I'm running software raid-1 and LVM that was defined 
under Fedora 12 cause me grief?
Are there any caveats moving from Fedora 15 to CentOS 6?

Any advise?

Thanks,
Gene Poole

+ It's impossible for everything to be true. +

> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
> Behalf Of Gene Poole
> Sent: Wednesday, December 14, 2011 13:08
> To: centos at centos.org
> Subject: [CentOS] Network Situation
> 
<SNIP>
> If I install CentOS 6.0 and sometime later upgrade to CentOS 6.2, will
> the fact that I'm running software raid-1 on the /boot partition 
> cause me grief?
<SNIP>

6.2 is the kind of release that those in the community and TUV call a
'point release'.
Reading the FAQ may help you.
"14. What is the versioning/release scheme of CentOS and how does it
compare to the upstream vendor?"
http://wiki.centos.org/FAQ/General#head-6e2c3746ec45ac3142917466760321e8
68f43c0e

And I think the backport link to redhat in the following FAQ could be
useful for you to understand.
"20. Where can I get the latest version of XyZ.rpm for CentOS? I cannot
find it anywhere."
http://wiki.centos.org/FAQ/General#head-472ce8446ebcfc82ca1800f775ba0e62
9ac835c7