Ok, I'm a Mac user myself. Let's try to debug everything that does not work, a problem at a time. First, we had to change from gnome-settings-daemon because the latest verson of the daemon is unusable. It crashes very often and it is terribly resource angry, much more than any other process in E17. That's probably because gnome is heading in a very incompatible way from E17, the previous daemon was usable... SOrry but it was necessary...
Now for the problems:
1) I'm changing the resolution from the e17 configuration panel and everything goes well, the res changes ok. What's the problems you found, could you explain me well the passages you did?