This isn’t a tutorial on how to bulk-update/upgrade plugins in WordPress 2.9, just a tip in case many users are confused as to where this much sought-after feature is. It’s under Tools -> Upgrade. Seriously, this has to be one of WP’s dumbest decisions yet. Why in the world would you put the bulk update for plugins under Tools -> Upgrade? It should be a button or an action from the bulk action dropdown. Usability Fail!