Comment 2 for bug 1034609

I found that it is possible to resolve all non-alignment issues by resizing the problem partitions a bit with gparted, using a live-cd.
The only partition where gparted fails to do this, is the FAT16 Dell diagnostics partition. Gparted ends with a numerical error on this (Which have not noted down and the problem machine is no longer with me).

Nevertheless, I am convinced this is a bug in the Ubuntu installer system, since I have let the ubuntu installer do the automagic find space and resize partitions himself without any manual interaction.