I have the same problem, it happens when I have 8 and more tabs open. The only workaround I found was to copy the link and to download it using wget. I kept the bug report (if needed)
-- "Save As" Dialog Causes Crash https://launchpad.net/bugs/64734 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
