It won't be very long until Unix will have to tackle this (hopefully they don't wait until 2037).
It looks like time_t is 64-bit on 64-bit system http://svnweb.freebsd.org/base/head/sys/x86/include/_types.h?view=markupSo the issue is probably solved by migration to 64-bit, which can be done before 2037.
