fc3 yum update

[redesb]

In the last 'yum update' using the exclude list recommended by Jeff here i get these results:

...
Dependencies Resolved
Transaction Listing:
  Update: e2fsprogs-devel.i386 0:1.36-1.FC3.1 - updates-released
  Update: hwdata.noarch 0:0.146.1-1 - updates-released
  Update: krb5-devel.i386 0:1.3.6-7 - updates-released
  Update: krb5-libs.i386 0:1.3.6-7 - updates-released
  Update: openssl.i386 0:0.9.7a-42.1 - updates-released
  Update: openssl-devel.i386 0:0.9.7a-42.1 - updates-released
  Update: pcre.i386 0:4.5-3.1.1.fc3 - updates-released

Performing the following to resolve dependencies:
  [COLOR=firebrick]Install: zlib-devel.i386 0:1.2.1.2-3.fc3 - updates-released[/COLOR]
Total download size: 4.7 M
Is this ok [y/N]: N
Exiting on user Command
Complete!

I doubt to update zlib because I remember DA install zlib-1.2.2.

Is secure to update zlib?

Thanks,
Ramon