Rick,
Speaking of backdoors, and I hope it's ok to ask this question here instead of starting another thread...
When I upgraded, I found files on my server that I had not seen before.
Those files are...
.bash_logout
.bash_profile
.bashrc
.gtkrc
.shadow
The files just looked suspicious to me. Since I don't know what they are, I renamed all of them before I started my upgrade. I haven't had any problems.
I know they are probably just standard linux/unix files, and I am probably showing grand and undiluted ignorance here... Could these have been some sort of backdoor or rootkit ?