Very quietly, on 9-9-2001 at 1:46:39GMT, a profound change will occur in the Unix operating system.
As many know, "Unix time" is recorded in seconds since the start of the epoch (1970).
On 09-09-31 (aprox 11 hours from now):
at 1:46:39 GMT, the "unix time will be": 999999999
at 1:46:40 GMT, the "unix time will be": 1000000000
Are your scripts ready for the rollover?