So, I was performing an Ubuntu Server upgrade from 11.04 to 11.10.
I forgot about it in the background, and my SSH client timed out and disconnected (putty on Windows, go figure). The last thing on my terminal was a question about keeping an old config, etc.
When I logged back in to the server, aptitude files were locked by another process, so I assume this upgrade process is sat there waiting for my input.
How I can interact with this process and continue the upgrade? If possible.