/var Filesystem Space

[Gene Poole <Gene Poole fds com>]

I've got /var on a separate filesystem.  Since I've upgraded to FC6, I've
discovered that the space is not adequate to support the FC6 updates.  Two
questions:
   1.  Can someone give me a estimate on how large this filesystem should
   be?
   2.  How can I add space to a standard ext3 filesystem?
I realize that the initial update will require the most space, so a
temporary increase would be the best.

Thanks,
Gene Poole