SSH hangs on login after 'last update'
This is usually because one of the files used by login has some function that takes a long time to return. It will commonly be either in your own home directory, where you should look at
.profile .bashrc .login .kshrc .tcshrc
If it's none of those, look in /etc for the same files, but usually without the dot:
and so on. The culprit will often be something that does a DNS lookup, but it might also be that you have it set to check when you last logged on, and your
btmp is very large.
ls -lhS /var/log/