No time to read the articles fully just now (just skimmed a couple of them) so I'll just collect the links here. Apparently, the gist is that leap seconds my be removed, causing civil time to go out of synch with the earth's rotation slowly.
- Steve Allen on leap seconds
- Markus Kuhn on leap seconds
- Metrologia on the history of the leap second
- Archives of the LEAPSEC mailing list
- Proceedings of the ITU colloquium on UTC
Links courtesy of dotaturls.