There have been a lot of complaints about the database server and manganese lately. I'm just writing this to let you know I hear you. :)
I've opened a ticket with the Planet about getting some much-needed upgrades.
Rather than just upgrading the existing boxes, my plan is to purchase completely new machines with better processors, faster hard drives, and a more modern operating system (CentOS 5).
I also plan to make the transition to MySQL 5.1 and the latest PHP5 during this upgrade. I also plan to drop older python versions in favor of 2.5, 2.6, and 3.0 ...
(If necessary, I may keep one of the old boxes around temporarily for people whose sites are dependent on the older technologies. Please let me know if you know your site is incompatible with these changes.)
I'll let you know more detail on the specs and timeline once I work out the deal with the planet.