Yesterday I took the opportunity to poke at the production version of deninet -- version 6. While there wasn't anything to fix, the site has certainly seen a lack of maintenance since I put my eyes on deninet7.
First off, there were several modules that were enabled, or simply installed, that weren't being used. Given my recent explorations into Drupal's guts, I've learned an enabled but unused module equates to wasted instruction cycles. I pulled out the modules, and cleaned up what small gaps that remained.