Error reporting web is a very good tool to find patterns in errors and open bugs accordingly. The problem here is that there are a lot of autobuilder systems out there that are generating errors because of bad configuration. These errors create a lot of noise and can hide real errors.
Up to now I think our strategy for handling this was covered by bug 8569, though there are a number of possible strategies.
Discussed this in triage, we should fix this via bug 8569. *** This bug has been marked as a duplicate of bug 8569 ***