From The Planet:

On Sunday night, January 15, 2006 The Planet will be conducting site-wide network maintenance on the TippingPoint network anti-intrusion system at the DLLSTX2 data center for 4 hours, beginning at 11:59PM CDT (GMT-0500).

Although the scheduled work is expected to be transparent to customers, it is possible that some latency and packet loss may be experienced for very brief periods of time during the upgrade.