The problem I had booting into Kubuntu came back yesterday. I played around with it more today, but I couldn't get Kubuntu to boot at all, with any previous kernel, even in recovery mode. After doing some research online, it appears I have have the 550559 curse. I had been thinking of buying a new hard drive, but now that I'm back to work I definitely don't want to fool with a complete laptop overhaul. Interestingly enough, my other two OSes--Vista and CentOS--have no problems whatsoever.
On the plus side, I did take a tiny step forward in learning mail servers, after I took some steps back. I figured things were getting too messy with courier, so I removed it and restored sendmail. Sendmail wasn't working either, and may have had problems for awhile, based on some mail I received as root (wait, does that even make sense?) Anyway, looks like the problem was that I hadn't configured the mail aliases. So that might have been the problem with Courier too. Regardless, after getting Sendmail going, I decided to install Dovecot instead. Stayed with mbox and was able to connect remotely with the simple configuration in the documentation. SSL and such comes later, much later. And LDAP is still looming in the horizon.
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