Why did it install PAE kernel in F11

[Mark Ryden]

Hello,
  I had installed fedora 11 on a 32 bit machine from scratch.
I had installed using defaults.

running "uname -r" gives:
2.6.29.4-167.fc11.i686.PAE

it installed a PAE kernel  (kernel-PAE-2.6.29.4-167.fc11.i686).

On this machine there was a regular, non PAE kernel on previous
installation of fedora 10.
My question is:
why all of a sudden with F11 it gives this PAE kernel ? is it OK?
should I remove this kernel
and install a new, non PAE  one?

regards,
Mark