g1smd - 6:26 am on Dec 15, 2012 (gmt 0)
Once someone within an organisation that size is aware of the issue, you're looking at about five to seven years for the fix to be implemented.
On the way there, there will be several hundred hours of meetings and numerous feasability and impact reports before a one year process of sign off travelling up the management chain.
After approval, you're looking at another year or so for the directive to travel back down the management chain to the actual person who's going to spend 30 minutes doing the job.
Getting a change like this through an organisation that size could cost several million dollars.