The Mac OS 10.5.6 update was released by Apple yesterday. This update has quite a few fixes. 

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Recently Apple released an EFI and an SMC update. Unlike most other software updates, these are firmware updates that need to change the software inside the chips in your Mac.

After looking through Console.app to find some logged errors, i found this:

The logged message is “SyncServer: Truth vacuumed”.

It appears that Apple are vacuuming Truth out of my machine.

To force a Time Machine backup, there are several ways of doing this graphically. However, for some reason, you wanted to do this via the command line, there is a command you can run.

First of all open Terminal.app, and then run the command

/System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd-helper >/dev/null 2>&1 &

This will start the backup. You can then feel free to close Terminal.app.