I have the same problem.
During most of yesterday the stats window including the graph and summaries were stuck on just 1 page view. Meanwhile the Top posts and pages for today were steadily going up. Although the Stats window did eventually increase before the end of the day the numbers still don't match - 32 against 85.
Today's aren't matching either. The stats window say 18, but the top posts and pages 25.
Everything looked right until Friday which I believe is when I upgraded to 1.4. I have subsequently upgraded to 1.4.1 (Saturday).