Starting a little more slowly, I went to the core of the apparent problem, and decided to build the base up again.

PERL had been installed with the initial OS, and upgraded three times since. Each of these left remnants in the @INC path, that I can't for the life of me figure out how to correct. I installed the new PERL 5.8.8 with the flag to ignore previous installations. This gave me the simple @INC path of only the 5.8.8 installation.

The installation went well, and I went about reloading the modules needed by the PERL software: SpamAssassin, mod_perl, and Bugzilla. All went well for the most part. Some modules failed, but were optional and not previously installed anyway--I was comparing the requirements for the softwares used with the modules previously installed; that's an investigation I believe could have gone more smoothly. Thank the developers before me for "find."

The only trouble-maker was the DBD::mysql package; it wouldn't compile. I tried a handful of tricks and modifications, ultimately hand-modifying the Makefile to remove some flags that gcc didn't like. I'm not sure how they got there, but simply removing them got the compilation done.

Later today I'll try to get the new server running again.