[Xquartz-dev] computer going to sleep error

Has anyone else found that when they put the computer to sleep and come back to it, Xquartz doesn't quite work and may need to be restarted? For instance, I ssh'ed into a remote machine after being asleep, tried to open emacs, and got the following error: Xlib: connection to "localhost:15.0" refused by server Xlib: Invalid MIT-MAGIC-COOKIE-1 key emacs: Cannot connect to X server localhost:15.0. Check the DISPLAY environment variable or use `-d'. Also use the `xhost' program to verify that it is set to permit connections from your machine. -gideon