Slackware :: Doesn't Start..xsession.errors Claim It Can't Open Display?

with slackware 13.0 for one user xfce4 hangs and doesn't start..xsession.errors claim it can't open display. It works fine for other users. Also if I access the machine in question as the same user but remotely using remote X (X-terminal on my LAN) it works fine.Sometimes if I wait and count to 30 it comes up but a lot of the features don't work.During the last week have posted this question on the compuserve linux forum and also in the xfce site forum with no solutions.seems there must be something in that user's directory which is hanging it up. I keep the same /home/users directory on a separate partition so when I upgrade for new versions of slackware the /home/users remain the same - I symlink home to that partition so upgrades are somewhat seemless.