Hi, I'm seeing the same problem since my upgrade to lenny, /home is an NFS-mount.
In my case the problem does not disappear by itself but I always need to do run 'mount -o remount,rw /home' on the NFS-client which solves the problem for some time. Both client and server are up-to-date lenny-systems: client: nfs-common 1:1.1.2-6lenny1 server: nfs-common 1:1.1.2-6lenny1 nfs-kernel-server 1:1.1.2-6lenny1 /etc/exports: /home calvin(rw,async,no_root_squash,no_subtree_check) /etc/fstab: gw:/home /home nfs rsize=32768,wsize=32768,intr 0 0 This configuration did work without any problems for several years up to and including 'etch'. If there's anything I can do to narrow down the problem I'll be happy to do it. P.S.: running 'xauth list :0' instead of 'mount -o remount,rw /home' as suggested by Michael Hanke does also solve the problem in my case: [EMAIL PROTECTED]:~$ xclock No protocol specified Error: Can't open display: :0.0 [EMAIL PROTECTED]:~$ xauth list :0 calvin/unix:0 MIT-MAGIC-COOKIE-1 8acb0bbe4feaeb354a32d9c0ea683f8a [EMAIL PROTECTED]:~$ xclock (works) Raoul -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]