as others mentioned it in this forum, too, I have the same problem, that CORONA causes really a mess at FTP.
I use WP 3.2.1 as a multisite installation. So I have at FTP a folder "blogs.dir" with subfolders for each blog (ID) etc., where all uploads go.
I have installed CORONA in October and uploaded images (featured images for pages, for example) in October and in November.
Wordpress creates in blogs.dir ... a folder for my blog-ID etc. and even for November, too - but uploaded files in November are all going in October folder at FTP.
This causes really a mess, because I have a huge number of images to upload now and in future.
What ever I've uploaded to CORONA theme, even today (17th November!), it's in the 2011/10/ folder (FTP) instead of 2011/11 now :-(
blogs.dir -> 20 (= it's Corona's blog ID) -> files -> 2011 -> 10
No single image is in "11" folder for November at all :-(
I run in this multisite installation other blogs with other themes, and each other theme puts the image files correctly in the month's folder, when it has been uploaded.