Don Qigong's Journal: Anonymous coward posting

Usually it seems like Slashdot has a system in place to prevent the same person from posting too many AC posts in a row. I know that, in years past, even on accounts with excellent karma, anything after the second AC post was usually met with time limits in excess of sixty minutes and anything after a third AC post was, well, forget it. Just use an account.

But, AC or not, it's clear that the same person keeps coming back to post repeatedly. Is there a backdoor in the slashcode or is this just a case of administrative abuse of privelege?