I just installed Ubuntu 8.04 LTS as well as the new 0.11.100 packages and all is well, except for the eBox software module:
eBox components
(show help) (hide help)
You have just hit a bug in eBox. Please seek technical support.
The other menu items (system updates, automatic updates) seem to work well, only the ebox components throw this error.
Any idea what's causing this and how to fix it?