WordPress “BugFix”
Introduced an alternative solution for the age-old WordPress “wpautowp” problem, which causes shortcodes and javascripts to “break” by inserting seemingly random <br /> tags.
This is one of the best documented WordPress idioysncrasies in the past 4-5 years.
According to the official WordPress bug tracking tool, a permanent fix is scheduled for WP v3.1, currently in beta.