[sergioaf]

Thanks a lot for your answer but the deal is, the BIOS time is only changing in one of the cases not on the other.
On any case, further tests have proven that if you boot up into the BIOS, change the time to the correct one, reboot and enter the BIOS again to check, the time is still correct, no matter how many time you do this, but if you let it boot into CheckPoint Software and reboot to check the time on the BIOS it has changed again, to a random one and not even close to what ever is reported on the Tracker logs.
In that particular case, there are 2 separate Dell servers showing that issue and Dell support says they have no patch for the BIOS and they checked the battery and it is fine, so they blame "whatever software runs on the systems"

Anybody else with similar experiences?