What is happening to user start up settings?

All of the user settings on a mac running os tiger 10.4.3 are being removed between reboots.

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BlackBird wrote on 9 March 2007:

Hello All,

All of the user settings on a mac running os tiger 10.4.3 are being removed between reboots.

Does anybody have any ideas?

Thank You,

Warren Oates replied on 9 March 2007:

In article 1173470473.432970.211870@redacted.invalid, "BlackBird" jnesselhauf@redacted.invalid wrote:

All of the user settings on a mac running os tiger 10.4.3 are being removed between reboots.

What "user settings?" How old is the Mac? Need a new battery?