Don't try to uninstall the system perl, that will only cause trouble.

If you think it's perl's fault, install a different perl version in a directory that's neither / nor /usr.

But first you should be sure that it's a problem in the core of perl, and not in a module or code you're using.

It might help if you tell us what code you run, and what error exactly you get. See also: How (Not) To Ask A Question.