I figured out the problem. Here's a new plist that works correctly: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple$ <plist version="1.0"> <dict> <key>Label</key> <string>com.startsquid</string> <key>Program</key> <string>/sw/sbin/squid</string> <key>ProgramArguments</key> <array> <string>squid</string> <string>-N</string> </array> <key>OnDemand</key> <false/> </dict> </plist> The only difference is that I added the 'Program' key with the path to the squid binary. (Fink <http://fink.sourceforge.net/> installs software in /sw.) Now squid starts when I log in and restarts automatically if it dies or gets killed. Steve Hoelzer