<font color=navy>I would expect that the only attractions closed in August would be Space Mountain (which will be closed till sometime in 2005), and maybe Big Thunder Mtn, unless they've opened it already. If they haven't opened it, I'm sure their goal is to have it open by the time summer hits.
Disneyland usually has very few refurbishments during their top tourist seasons: spring break, summer, Thanksgiving weekend, Christmas season.
Buzz Lightyear is a show in Tomorrowland (although I hear they're working on opening the Buzz Lightyear ride there).