My system suddenly slowed to a crawl and the culprit was syslogd taking 97% of the CPU and writing a huge file. I didn't study all of the lines written, but they were mostly all aptana generated and looked like they repeated the same stuff. The bottom of the file looks like this:
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: !ENTRY org.radrails.rails.core 4 0
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: 2008-12-16 10:37:04.733
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: !MESSAGE Invalid YML syntax: adapter: mysql
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: !STACK 0
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: org.radrails.rails.core.yml.YMLParserException: Invalid YML syntax: adapter: mysql
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.core.yml.SimpleYMLParser.fatal(SimpleYMLParser.java:157)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.core.yml.SimpleYMLParser.fatal(SimpleYMLParser.java:153)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.core.yml.SimpleYMLParser.fatalFormat(SimpleYMLParser.java:149)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.core.yml.SimpleYMLParser.parseLine(SimpleYMLParser.java:132)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.core.yml.SimpleYMLParser.parseDocument(SimpleYMLParser.java:76)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.core.yml.SimpleYMLParser.parse(SimpleYMLParser.java:55)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.db.core.DatabaseYml.load(DatabaseYml.java:103)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.db.core.DatabaseYml.getDescriptorMap(DatabaseYml.java:67)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.db.core.DatabaseYml.getDescriptors(DatabaseYml.java:91)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.db.core.ProjectDatabaseManager.getDatabaseDescriptors(ProjectDatabaseManager.java:105)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.rails.internal.ui.RailsDBConnector.projectAdded(RailsDBConnector.java:245)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.radrails.db.core.DatabaseManager.resourceChanged(DatabaseManager.java:180)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:280)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:274)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:148)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:256)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:958)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1746)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.events.NotificationManager$NotifyJob.run(NotificationManager.java:39)
Dec 16 10:37:04 XXX-MacBook-Pro [0x0-0x1a01a].com.aptana.ide[327]: at org.eclipse.core.internal.jobs.Worker.run(Worker.java:5