running bandwidthd version 2.1.5 on pfsense
2.1-BETA0 (i386)
built on Sun Dec 9 04:41:14 EST 2012
FreeBSD 8.3-RELEASE-p5
The top graph show up fine, however the detailed graphs per pc do not display any pictures. When looking at the files, the .png file show a zero byte size.
screenshot
We are also encountering this exact same issue, on two out of three instances of bandwidthd.