kdm won't start kde2

Hi all- I had to blast my system and reinstall potato. I got task-kde from kde.debian.net and got kdm running, but I can't launch kde2 from kdm. Blackbox and twm are launched from default and failsafe. The x-window-manager alternative points to /usr/bin/blackbox. I tried to change this to kde2

stable -> testing kde problems

I just upgraded my potato box to testing and am having problems getting kde set up. I noticed there is no task-kde in testing (correct?). So I manually picked the kde debs with dselect. I got kdm running fine, but when I try to login via kdm, the machine hangs for a few seconds and then dumps me