Poker Patterns gone blocky

[onnel]

I had been a happy Poker Patterns user with nary a problem unitl just a few days ago. Suddenly, my Poker Patters graphs have become blocky when graphing by day, with multiple "points" on a single day.

A graphic probably illustrates the problem best:

http://img106.imageshack.us/my.php?image=graph6un.png
(sorry UBB not working because of naughty people doing naughty things)

I'm using Pokertracker with a Postgres DB, but as far as I know nothing has really changed in the last few days.

Ideas or solutions?

Thanks!

Onnel