Yes, I'm seeing this too - and I had not realized I needed to be so vigilant in doublechecking base points, so thanks for reviving the thread.

Looked at just my most recent stays and *the last 5 were off* - to the tune of:

original base 869 now corrected by GP to 896
538 -> 626
508 -> 645
766 -> 806

And the real kicker:
839 -> 1195

Total base points shorted: 648 (equivalent to a one-night stay). This of course does not include the Diamond bonus points added on top.

As usual, the GP customer service rep was very nice, very apologetic, and very willing to fix the errors.

However, from my side, it's very disconcerting to see this. None of the past 10 or so records show an error in my favor; half looked accurate, and the other half all had errors to Hyatt's benefit. Definitely will be tracking this more closely in the future. Between this and all the other snafus and glitche, I now know not to trust Hyatt's systems for anything. As expressed earlier in this thread, why is it the customer's responsibility to babysit the system and do all this constant follow-up, particularly when these apparently are *known issues* to the company? If this is human error, train your people appropriately. If it's a computer problem, fix it.

Increasingly frustrated with Hyatt.