I have a test site with WP 2.7RC1.
Using the Safari browser for Mac the home page shows no sidebars, no matter what theme is used. Other pages are ok, it's just the home page. FireFox does not have this problem -- only Safari.
I won't be able to upgrade to 2.7 on my main blog until this is resolved, since a significant portion of my readers use Safari.
Does anyone have any experience with this? I searched the forums, but found no mention of it.