Things that have happened since March 2000: Things that have not happened since then: That's right, the former tech kingpin still has not surpassed its all-time high of $80.06, reached on March 27, 2000. That was during a stretch that saw Cisco very briefly dethrone Microsoft as the world's most valuable company. ItThe company was the dominant manufacturer of the routers that powered the internet revolution. Life was good. It was from that level that Cisco's stock plummeted more than 85% as the