I installed OZ 3.5.3 (GPE) a few days ago to test it out using a 32/32 configuration on a SL-5500. I can confirm the autologin of root issue, as well as the in-ability of users to log in if their config was changed. I can also confirm the control applet did nothing at all, but the only major problem I found was the inability to sync with the PC. I was able to ping both ways, but that was it, so this morning I decided to try Opie. Right away it communicated with Qtopia 1.7, so it already has a leg up in my case. At this time, I don't remember any other issues that I had with GPE, and the jury is still out on Opie.