I've got an xrdp server (package: xrdp-0.9.0git.1401423964-2.1.x86_64) running
on my openSUSE 13.2 laptop and try to log in with xfreerdp (package:
freerdp-1.0.2-3.4.1.x86_64) from my desktop (running openSUSE 13.1).
This works perfectly fine the first time I log in. However, once I log out
again and then try to reconnect (just like before), I get a generic error
message, something along the lines of:
login successful for display
started connecting
connecting to 127.0.0.1
error - problem connecting

Login to other server from the same client work perfectly fine.
The logs on the server show nothing interesting (a warning about the keymap
file and a message about starting sesman).

ps reveals a defunct xrdp-sessvc process.

Once I shut down the xrdp service, wait briefly, and then restart, I can log in
again. Also, the defunct xrdp-sessvc vanishes. 
The problem is that the user doing this needs root access.