Frustrating date/time settings, (have new battery)

Hi,
I have a G5 and notice the date and time settings change while my computer is in sleep mode. It is usually hours behind the real clock, or it is set to a competely new year or date. I replaced the internal battery yesterday, and that did not fix the problem. I zapped the PRAM this morning and this doesn't seem to have helped either.
Any one got any suggestions?

Hi
I expect you've checked already, but presumably the following settings are still correct:
System Preferences - International - Formats
System Preferences - Date & Time - Date & Time
System Preferences - Date & Time - Time Zone
I guess it's possible you're using a UK date format etc where the day and month are reversed, or syncing with a remote clock in the wrong time zone.
I could be wrong, but I didn't think the PRAM battery was used in sleep mode, so I'm wondering whether it's resyncing on wake up with a remote clock somewhere on a LAN or the internet that's set to a different time. My date and time is set automatically from Apple Europe (time.euro.apple.com).

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