Same problem here with the Safari and Aperture Update.
I guess in a couple of minutes or hours it will work...not a big deal
iPhoto Update worked..
Same for me .No problem with iPhoto but I get the following error for Safari:
Lopération na pas pu sachever. (NSURLErrorDomain erreur -3001).(102)
Which means the operation could not be completed + error message
iPhoto downloaded okay
Error occurred Safari update View attachment 374245
Same problem here - too many downloading at the same time?