Comment 5 for bug 107594

Both those are old versions... The current version of sshfs is 1.8 (May 16, 2007), and the current version of encfs is 1.3.2 (Feb 14, 2007). I'd update sshfs because they've been fixing known bugs and 1.6 is about 18 months old!

If there isn't anything more up-to-date Ubuntu, then you'll have to install them yourself. Perhaps the x86-64 versions aren't so recent, because I installed Ubuntu Feisty on x86-32 and it came with encfs-1.3.2.