I can set the clock to the exact time and date through the internet connection. It will keep proper time as long as the PS3 is turned on. If you go to standby mode and then power up it will revert to the time when it was first set. For example, assume it is set to 12 noon. Two hours later it reads 2pm. Go to standby and re power and its back to 12 noon.
This has been the case since it was new 2 months ago. The upgrade to 2.2 has not helped. Nor has a complete system restore including a hard drive reformat.
It’s not that big of a deal since the clock seems to be relatively useless but I am curious about what could be causing this.

PC's have a battery on the motherboard that keeps the time when the PC is turned off. The time will start slipping when the battery gets low. Not sure if they have a battery or not. How long have you owned your PS3?

i had a problem like this with a PC recently. All my research said I would have to replace an expensive battery on the motherboard.

in my final desperate attempt I fully powered the system down and unplugged the power strip waited 10 minutes and restarted

it has since been fixed. In fact a prior full powerdown and unplug is what started my problems, and its funny a 2nd one fixed it, and saved my mucho dollars. I would try that 1st but since the ps3 is less than a year old for you, a manufacturer warranty covered servicing sounds like your best bet

the ps3 has a clock?

in my final desperate attempt I fully powered the system down and unplugged the power strip waited 10 minutes and restarted

it has since been fixed. I unplugged the unit from the AC overnight but the symptoms remained. Thanks for the suggestion.

i had a problem like this with a PC recently. All my research said I would have to replace an expensive battery on the motherboard.


Powering down isn't going to help in the long run. It's only expensive if you have someone else do it. The battery only costs a few dollars at most. I guess if your not familer with the BIOS that might cause some issues but physically changing the battery is a snap. If it's not totally dead and you swap fast enough. the BIOS shouldn't be an issue.

the ps3 has a clock?

Yep, the PS2 has a clock also.

I called Sony support and they claim to have never heard of the problem. They offered to exchange the unit but I declined.