5:15 PM -- No idea if this is all that useful, but in researching Padmasree Warrior's hiring, I wanted to double-check that she's just the fourth person to be chief technology officer at Cisco Systems Inc. (Nasdaq: CSCO).

Here's the timeline I came up with. Scream at me via the message boards if it's wrong.

Table 1: CTO Timeline

CTO	Reign	After Being CTO...
Ed Kozel	1990-1998	Returned to Cisco in 2000. Now CEO of Skyrider. (See Ed Kozel Is Back at Cisco.)
Judy Estrin	1998-2000	Founded Packet Design Inc. (See Estrin Launches "Perpetual Startup".)
Charles Giancarlo	2004-2005	Promoted to Chief Development Officer, a title he still holds. (See Cisco's Reorg: What It Means and Cisco Names Data Chief.)
Padmasree Warrior	2007-?	We'll see.

— Craig Matsumoto, West Coast Editor, Light Reading