pfstat gone nuts

[Colin Harford]

http://www.ualberta.ca/~charford/pfstat1.jpg

So, I think a picture is worth a thousand words.  I've had pfstat 
working for a couple weeks on this machine without problems.  It is 
monitoring a single 100 megabit pipe, usually with 3 mb/sec of traffic 
on it each way.  The past 2 days I run into problems with the stats 
being completely off the wall, like the illustration shows.

Has anyone run into this problem before?

It is running pfstat-1.6 and OpenBSD 3.4 (source rebuilt 7 days ago).

Thanks,

CH