I don't think this version will solve your problems (yet), but you can start it with "indicator-multiload -v" to get some information on the processing that is going on behind the scenes.
This should give you a dump of all recognized network devices. Could you post an example of the resulting output?
Could you try to install the beta version from http:// mh21.de/ temp/indicator- multiload_ 0.3-0~43~ 15_amd64. deb?
I don't think this version will solve your problems (yet), but you can start it with "indicator- multiload -v" to get some information on the processing that is going on behind the scenes.
This should give you a dump of all recognized network devices. Could you post an example of the resulting output?