[Tsiklon]

In my opinion; of all the sections in an Operating System's installation program the partitioner should be the least vague of all.

At every step of the partitioning/volume management process you should be able to quickly undo or back out of your selection. only when the user is happy with the structure or layout should any change be committed, likewise there should be no ambiguity in the functionality of any aspect of it's operation.

After all it is your data you may be potentially blowing away.

It's been a while since I last installed Debian, so I can't comment on the installation experience there though I can't recall running into any issues. It was a perfectly forgettable experience. The Ubuntu installer was also excellent, and the partitioning aspect was both clean and clear when creating a custom setup.