I have Ubuntu 7.04 installed (and upgraded) on my main machine and when I try to SSH in from my other Ubuntu machine I get the simple following error message:
Permission denied (publickey).
I have never experienced a problem with ssh in older versions of Ubuntu and as a result don't have much experience configuring the SSH server etc. I have spent a fair amount of time googling for this issue and found very little. I would have expected this to be a fairly common problem with more recent versions of Ubuntu.
I would appreciate any help.