There is a report out that BC Parks has closed access to the Lower and South Apron due to a rock fall danger. There is a large loose rock near the top of the third pitch of Over The Rainbow (where Sickle crosses it). See the squamishclimbing.com forum page: http://squamishclimbing.com/squamish_climbing_bb/viewtopic.php?f=1&t=4535 for more information.
Thank you Kitty for forwarding the link to me.
Yep, can confirm. Yesterday (July 4th), parks ranger told us that everything south of Deidre is off-limits until further notice.
Given rocks from above I thought you might like this helmet test.
http://www.youtube.com/watch?v=MJhngt_wS2Y
Marc