My weekly column in today's Financial Post looks at some of the most pleasant and troubling high-tech surprises in 2005. The highlights include the rise of Firefox (10% market share and counting) and the reinvigoration of the browser market - even if Flock stumbled out of the gate with a  not ready for prime-time beta. Another positive was the return of the entrepreneur and the start-up after they both disappeared for a few years after the dot-com bubble burst. The not-so-good moments included Nortel Networks, which has seemed to perfect the two steps forward-one step back dance. The classics moves were the hiring of Gary Daichendt as COO - only to see him quit three months later after a failed attempt to dethrone CEO Bill Owens; and the subsequent hiring of Mike Zafirovski as CEO - only to see him sued by Motorola for breaching his termination agreement.