Inconsistent Windows Disk Graph Behaviour

[GreyDuck]

I've been a happy user of Cacti for a while now, and I tend to roam over to these forums from time to time when I'm trying something new. I learned about the max-size template value and how it can break the graph for a very large drive, for instance.

Here's what I'm having trouble with, though. Today I set up new graphs for some Win2k machines. On one, the graph is generating correctly. On another, the disk graphs are "all blue," or basically not displaying the used space (shown in red).

I used the exact same method to create these graphs... so what gives?

My graphs page is here, and the relevant graph tree is "Loggers." You can clearly see that Logger Two has "good" disk usage graphing, while One and Three have essentially useless graphs. (I blew out and recreated One's graphs because I suspect I created those back before I changed the template to include the max-size fix. But notice that Two has a single larger drive, and its graph is fine... while One and Three have smaller drives and no data... so max-size isn't the problem...)

What do you think, sirs?

[GreyDuck]

For what it's worth... I've upgraded to 0.8.4 (pretty!), removed Logger One's disk space graphs, recreated them... and still no love. Anyone? Anyone?