taxonomy: vocabulary names can't be translated

I observed that when I installed the sitemenu module. I hacked that module by by changing the line 137 into it to:

$boxes[$n]["subject"] = t($vocabulary->name);

First I wanted to forward this bug to that module but after a while I realized that modules which display the vocabulary name could have this problem, also.
Sorry If I submitted this bug to the wrong project (there are a lot of taxonomy modules there).