I need hardlink support in sftp and the newest ssh version provides this. But there are no packages for Ubuntu 10.10. Therefor I backported OpenSSH from Ubuntu 11.04 to 10.10. Here you can find these packages:

64 bit⌗

• openssh-client_5.7p1-1ubuntu1_amd64.deb
• openssh-server_5.7p1-1ubuntu1_amd64.deb
• ssh-askpass-gnome_5.7p1-1ubuntu1_amd64.deb
• sshfs_2.2-1build1_amd64.deb

32 bit⌗

• openssh-client_5.7p1-1ubuntu1_i386.deb
• openssh-server_5.7p1-1ubuntu1_i386.deb
• ssh-askpass-gnome_5.7p1-1ubuntu1_i386.deb
• sshfs_2.2-1build1_i386.deb

all⌗

• ssh_5.7p1-1ubuntu1_all.deb
• ssh-krb5_5.7p1-1ubuntu1_all.deb

The minimum upgrade consists of installing openssh-client and openssh-server.