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# Logs

When an application is running, many messages are run between the application, the system and its components. This information is stored in Log files. The System also creates logs and archives them during System maintenance operations. When an application freezes, the details are saved in a diagnostic report which you can use to diagnose the problem, or you can send to the developer (if asked to do so).
The Automation panel allows you to remove all logs and diagnostic reports except the OnyX, bash and System Software Update Logs.
The Logs tab of the Cleaning panel allows you to individually delete them.

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Log Files: This option deletes the applications Logs, Terminal Command Log and some System Logs.

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Software Update Log: This option allows you to delete the log that contains the Apple Software Update log. This log (Software Update.log) is located in the /Library/Logs/ folder and can viewed in the "Software Update" Preferences pane (Installed Updates tab).

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bash Log: This option allows you to delete the log that contains the list of commands entered in the Terminal.

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System Archived Logs: When the periodic scripts (daily, weekly and monthly) are run, log files are archived and compressed. There may be up to 7 archives per log. This option allows you to remove all of the compressed archives and some System saved logs.

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Instant message logs: This option removes the saved conversations of the most popular Instant Messaging applications. Supported applications: iChat, Adium, Yahoo! Messenger, aMSN, Fire, Skype, Proteus, MSN Messenger, AOL Instant Messenger, Colloquy, JBuddyMessenger, Psi, Conversation, MacOSX.com Chat, Snak, IRC, Minerva, X-Chat Aqua, MChat, SnapTalk, jIRCii and VChat.

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User Diagnostic Reports: This option allows you to delete all User Diagnostic Reports. The daily maintenance script also deletes these files, but only those that have not been modified in the last 60 days. Any Web browser creates a FullCircle folder with two files: manifest.ini and permdata.box. These files can be sent when there is a browser crash and will be used by developers to diagnose and correct the cause of the problem. Each new version adds a new folder making the previous one outdated. This option deletes the FullCircle folder located in the /Library/Application Support folder in the user's Home folder.

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System Diagnostic Reports: This option deletes any Diagnostic Reports created by the system and relaunch the syslogd daemon (process that records the activities of the system).

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Mobile Devices CrashReporter: This option deletes any Diagnostic Reports that have occurred on your Mobile Device.