I'm trying to find out why this happens to me, but I'm out of ideas that's why I'm asking for your help.
I use "In/Out Bits with Total Bandwitdh" graphs for several hosts, but I noticed that only the standard timeframes "Last Day", "Last Week", "Last Month", "Last Year" and the custom "Last 2 Days" work properly. The rest are giving me strange Total Bandwidth values.
This is the "Last Day" Graph:
![Image](http://img169.animersion.net/img169/1230/1dayem1.png)
All fine, but now the "Last 3 Days":
![Image](http://img169.animersion.net/img169/2463/3daysgl4.png)
And the "Last 2 Weeks":
![Image](http://img167.animersion.net/img167/4466/2weeksds4.png)
Finally, "Last 2 Months":
![Image](http://img20.animersion.net/img20/9663/2monthsft1.png)
I'm currently using the Debian stock Cacti 0.8.6i, but I've tried the same data files with 0.8.6j and the problem is still there.
Any idea why that's happening?