I believe you are looking for a content management system...
almanah - application to ease management of a personal diary diogenes - web content management system libroxen-ecms - Simple content management module for the Roxen Challenger web server med-cms - Debian Med content management systems textpattern - flexible and easy-to-use content management system typo3 - Powerful content management framework (Meta package) webgui - Content management platform to maintain complex web sites xfce4-cddrive-plugin - CD-Rom drive management plugin for the Xfce4 panel zope-cmfbibliographyat - A Bibliography management product for Zope/CMF/Plone zope-plone3 - content management system based on zope and cmf zope-zms - Content management for science, technology and medicine drupal6 - a fully-featured content management framework
Unfortunately I'm no hardware expert, so here's my question. Can this be hacked onto the existing board? If not, any chance of seeing this added in the future?
A tiny, cheap 9 volt NiMH battery into a simple 3 pin 7805 regulator's output right onto the sheeva's power supply ought to do the trick. Have some resistor or something trickle charge the battery and it should be good to go.
I have one of those cheap UPS supplies and have a automotive battery in a battery box next to it. It will last for days...
Unfortunately, APC supplies float the battery voltage high, which requires the water level to be watched every month. I believe APC does this on purpose, because it causes a battery that should last 15 years to only last 3 years. Be careful with this setup, since the battery may be at line voltage and can shock or become a fire hazard. That's why I keep it in a clean battery case.
What kernel version are you using? I remember reading a lot of diffs between versions over storage on SD devices, on crude things like spinlocks and such. It may be a bug that has been patched already.