Will updating Fedora Linux break RT?

I am trying to decide if I should set Fedora to keep itself up to date, but
I am very nervous about it breaking RT. I know that there are times where
PERL has to be recompiled, etc if one of the modules change.

Any thoughts on this? Should I just leave well enough alone since it is
working, or keep modules up to date if possible?

Thanks in advance!
Brett