I'm using the latest version of feisty and I am having this problem as well. It sometimes happens even when transferring small files (less than 5kb). It would appear as though there is no timeout for FTP connections. I don't even have to click cancel though. I just have to be transferring items via FTP and if the connection somehow drops, it will hang.
-- Hang on connection to FTP, with cancel https://launchpad.net/bugs/19247 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs